Finding the Fourth Proportional to 87,081.96, 130,603.74 and 42,664.68

Step by Step Solution

1. Step 1: Write the proportion equation
   87,081.96 : 130,603.74 = 42,664.68 : x
2. Step 2: Convert to fraction form
   87,081.96/130,603.74 = 42,664.68/x
3. Step 3: Cross multiply
   87,081.96x = 130,603.74 × 42,664.68
4. Step 4: Simplify right side
   87,081.96x = 5,572,166,773.90
5. Step 5: Solve for x
   x = 5,572,166,773.90/87,081.96
6. Step 6: Final answer
   x = 63,987.61