Finding the Fourth Proportional to 103,081.46, 142,191.33 and 65,290.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,081.46 : 142,191.33 = 65,290.10 : x
2. Step 2: Convert to fraction form
   103,081.46/142,191.33 = 65,290.10/x
3. Step 3: Cross multiply
   103,081.46x = 142,191.33 × 65,290.10
4. Step 4: Simplify right side
   103,081.46x = 9,283,686,154.83
5. Step 5: Solve for x
   x = 9,283,686,154.83/103,081.46
6. Step 6: Final answer
   x = 90,061.65