Finding the Fourth Proportional to 101,077.88, 139,532.31 and 65,285.34

Step by Step Solution

1. Step 1: Write the proportion equation
   101,077.88 : 139,532.31 = 65,285.34 : x
2. Step 2: Convert to fraction form
   101,077.88/139,532.31 = 65,285.34/x
3. Step 3: Cross multiply
   101,077.88x = 139,532.31 × 65,285.34
4. Step 4: Simplify right side
   101,077.88x = 9,109,414,299.34
5. Step 5: Solve for x
   x = 9,109,414,299.34/101,077.88
6. Step 6: Final answer
   x = 90,122.73