Finding the Fourth Proportional to 101,134.50, 139,565.67 and 56,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,134.50 : 139,565.67 = 56,422.50 : x
2. Step 2: Convert to fraction form
   101,134.50/139,565.67 = 56,422.50/x
3. Step 3: Cross multiply
   101,134.50x = 139,565.67 × 56,422.50
4. Step 4: Simplify right side
   101,134.50x = 7,874,644,015.58
5. Step 5: Solve for x
   x = 7,874,644,015.58/101,134.50
6. Step 6: Final answer
   x = 77,863.08