Finding the Fourth Proportional to 78,487.73, 108,312.50 and 42,677.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,487.73 : 108,312.50 = 42,677.76 : x
2. Step 2: Convert to fraction form
   78,487.73/108,312.50 = 42,677.76/x
3. Step 3: Cross multiply
   78,487.73x = 108,312.50 × 42,677.76
4. Step 4: Simplify right side
   78,487.73x = 4,622,534,666.61
5. Step 5: Solve for x
   x = 4,622,534,666.61/78,487.73
6. Step 6: Final answer
   x = 58,895.00