Finding the Fourth Proportional to 748,494,790.72, 1,120,552,853.12 and 436,648,886.08

Step by Step Solution

1. Step 1: Write the proportion equation
   748,494,790.72 : 1,120,552,853.12 = 436,648,886.08 : x
2. Step 2: Convert to fraction form
   748,494,790.72/1,120,552,853.12 = 436,648,886.08/x
3. Step 3: Cross multiply
   748,494,790.72x = 1,120,552,853.12 × 436,648,886.08
4. Step 4: Simplify right side
   748,494,790.72x = 489,288,155,108,613,760
5. Step 5: Solve for x
   x = 489,288,155,108,613,760/748,494,790.72
6. Step 6: Final answer
   x = 653,696,139.47