Finding the Fourth Proportional to 102,613.38, 141,612.72 and 57,291.30

Step by Step Solution

1. Step 1: Write the proportion equation
   102,613.38 : 141,612.72 = 57,291.30 : x
2. Step 2: Convert to fraction form
   102,613.38/141,612.72 = 57,291.30/x
3. Step 3: Cross multiply
   102,613.38x = 141,612.72 × 57,291.30
4. Step 4: Simplify right side
   102,613.38x = 8,113,176,825.34
5. Step 5: Solve for x
   x = 8,113,176,825.34/102,613.38
6. Step 6: Final answer
   x = 79,065.49