Finding the Fourth Proportional to 101,404.85, 139,937.81 and 56,081.86

Step by Step Solution

1. Step 1: Write the proportion equation
   101,404.85 : 139,937.81 = 56,081.86 : x
2. Step 2: Convert to fraction form
   101,404.85/139,937.81 = 56,081.86/x
3. Step 3: Cross multiply
   101,404.85x = 139,937.81 × 56,081.86
4. Step 4: Simplify right side
   101,404.85x = 7,847,972,038.87
5. Step 5: Solve for x
   x = 7,847,972,038.87/101,404.85
6. Step 6: Final answer
   x = 77,392.48