Finding the Fourth Proportional to 102,726.89, 141,777.18 and 59,118.56

Step by Step Solution

1. Step 1: Write the proportion equation
   102,726.89 : 141,777.18 = 59,118.56 : x
2. Step 2: Convert to fraction form
   102,726.89/141,777.18 = 59,118.56/x
3. Step 3: Cross multiply
   102,726.89x = 141,777.18 × 59,118.56
4. Step 4: Simplify right side
   102,726.89x = 8,381,662,013.57
5. Step 5: Solve for x
   x = 8,381,662,013.57/102,726.89
6. Step 6: Final answer
   x = 81,591.71