Finding the Fourth Proportional to 107,934.89, 148,991.18 and 81,155.16

Step by Step Solution

1. Step 1: Write the proportion equation
   107,934.89 : 148,991.18 = 81,155.16 : x
2. Step 2: Convert to fraction form
   107,934.89/148,991.18 = 81,155.16/x
3. Step 3: Cross multiply
   107,934.89x = 148,991.18 × 81,155.16
4. Step 4: Simplify right side
   107,934.89x = 12,091,402,645.71
5. Step 5: Solve for x
   x = 12,091,402,645.71/107,934.89
6. Step 6: Final answer
   x = 112,024.97