Finding the Fourth Proportional to 100,900,792.71, 139,243,088.61 and 54,491,042.16

Step by Step Solution

1. Step 1: Write the proportion equation
   100,900,792.71 : 139,243,088.61 = 54,491,042.16 : x
2. Step 2: Convert to fraction form
   100,900,792.71/139,243,088.61 = 54,491,042.16/x
3. Step 3: Cross multiply
   100,900,792.71x = 139,243,088.61 × 54,491,042.16
4. Step 4: Simplify right side
   100,900,792.71x = 7,587,501,011,936,126
5. Step 5: Solve for x
   x = 7,587,501,011,936,126/100,900,792.71
6. Step 6: Final answer
   x = 75,197,635.30