Finding the Fourth Proportional to 765,391,090,109.32, 1,056,240,128,131.90 and 413,424,020,373.76

Step by Step Solution

1. Step 1: Write the proportion equation
   765,391,090,109.32 : 1,056,240,128,131.90 = 413,424,020,373.76 : x
2. Step 2: Convert to fraction form
   765,391,090,109.32/1,056,240,128,131.90 = 413,424,020,373.76/x
3. Step 3: Cross multiply
   765,391,090,109.32x = 1,056,240,128,131.90 × 413,424,020,373.76
4. Step 4: Simplify right side
   765,391,090,109.32x = 436,675,040,252,385,495,613,440
5. Step 5: Solve for x
   x = 436,675,040,252,385,495,613,440/765,391,090,109.32
6. Step 6: Final answer
   x = 570,525,377,020.02