Finding the Fourth Proportional to 107,766.76, 148,666.62 and 83,728.93

Step by Step Solution

1. Step 1: Write the proportion equation
   107,766.76 : 148,666.62 = 83,728.93 : x
2. Step 2: Convert to fraction form
   107,766.76/148,666.62 = 83,728.93/x
3. Step 3: Cross multiply
   107,766.76x = 148,666.62 × 83,728.93
4. Step 4: Simplify right side
   107,766.76x = 12,447,697,019.32
5. Step 5: Solve for x
   x = 12,447,697,019.32/107,766.76
6. Step 6: Final answer
   x = 115,505.90