Finding the Fourth Proportional to 102,555.91, 141,527.19 and 56,615.59

Step by Step Solution

1. Step 1: Write the proportion equation
   102,555.91 : 141,527.19 = 56,615.59 : x
2. Step 2: Convert to fraction form
   102,555.91/141,527.19 = 56,615.59/x
3. Step 3: Cross multiply
   102,555.91x = 141,527.19 × 56,615.59
4. Step 4: Simplify right side
   102,555.91x = 8,012,645,362.89
5. Step 5: Solve for x
   x = 8,012,645,362.89/102,555.91
6. Step 6: Final answer
   x = 78,129.53