Finding the Fourth Proportional to 124,841.10, 187,379.10 and 65,719.20

Step by Step Solution

1. Step 1: Write the proportion equation
   124,841.10 : 187,379.10 = 65,719.20 : x
2. Step 2: Convert to fraction form
   124,841.10/187,379.10 = 65,719.20/x
3. Step 3: Cross multiply
   124,841.10x = 187,379.10 × 65,719.20
4. Step 4: Simplify right side
   124,841.10x = 12,314,404,548.72
5. Step 5: Solve for x
   x = 12,314,404,548.72/124,841.10
6. Step 6: Final answer
   x = 98,640.63