Finding the Fourth Proportional to 157,870,983.72, 236,698,711.38 and 84,105,792.12

Step by Step Solution

1. Step 1: Write the proportion equation
   157,870,983.72 : 236,698,711.38 = 84,105,792.12 : x
2. Step 2: Convert to fraction form
   157,870,983.72/236,698,711.38 = 84,105,792.12/x
3. Step 3: Cross multiply
   157,870,983.72x = 236,698,711.38 × 84,105,792.12
4. Step 4: Simplify right side
   157,870,983.72x = 19,907,732,614,398,160
5. Step 5: Solve for x
   x = 19,907,732,614,398,160/157,870,983.72
6. Step 6: Final answer
   x = 126,101,276.79