Finding the Fourth Proportional to 42,791,128.26, 64,184,329.76 and 31,288,383.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,791,128.26 : 64,184,329.76 = 31,288,383.06 : x
2. Step 2: Convert to fraction form
   42,791,128.26/64,184,329.76 = 31,288,383.06/x
3. Step 3: Cross multiply
   42,791,128.26x = 64,184,329.76 × 31,288,383.06
4. Step 4: Simplify right side
   42,791,128.26x = 2,008,223,895,980,237.75
5. Step 5: Solve for x
   x = 2,008,223,895,980,237.75/42,791,128.26
6. Step 6: Final answer
   x = 46,930,847.06