Finding the Fourth Proportional to 102,493.50, 141,441.06 and 57,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,493.50 : 141,441.06 = 57,781.50 : x
2. Step 2: Convert to fraction form
   102,493.50/141,441.06 = 57,781.50/x
3. Step 3: Cross multiply
   102,493.50x = 141,441.06 × 57,781.50
4. Step 4: Simplify right side
   102,493.50x = 8,172,676,608.39
5. Step 5: Solve for x
   x = 8,172,676,608.39/102,493.50
6. Step 6: Final answer
   x = 79,738.49