Finding the Fourth Proportional to 102,818.50, 141,888.55 and 57,495.96

Step by Step Solution

1. Step 1: Write the proportion equation
   102,818.50 : 141,888.55 = 57,495.96 : x
2. Step 2: Convert to fraction form
   102,818.50/141,888.55 = 57,495.96/x
3. Step 3: Cross multiply
   102,818.50x = 141,888.55 × 57,495.96
4. Step 4: Simplify right side
   102,818.50x = 8,158,018,251.52
5. Step 5: Solve for x
   x = 8,158,018,251.52/102,818.50
6. Step 6: Final answer
   x = 79,343.88