Finding the Fourth Proportional to 101,361.62, 139,874.91 and 56,036.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101,361.62 : 139,874.91 = 56,036.72 : x
2. Step 2: Convert to fraction form
   101,361.62/139,874.91 = 56,036.72/x
3. Step 3: Cross multiply
   101,361.62x = 139,874.91 × 56,036.72
4. Step 4: Simplify right side
   101,361.62x = 7,838,131,166.70
5. Step 5: Solve for x
   x = 7,838,131,166.70/101,361.62
6. Step 6: Final answer
   x = 77,328.39