Finding the Fourth Proportional to 101,084.28, 139,494.57 and 55,766.61

Step by Step Solution

1. Step 1: Write the proportion equation
   101,084.28 : 139,494.57 = 55,766.61 : x
2. Step 2: Convert to fraction form
   101,084.28/139,494.57 = 55,766.61/x
3. Step 3: Cross multiply
   101,084.28x = 139,494.57 × 55,766.61
4. Step 4: Simplify right side
   101,084.28x = 7,779,139,282.31
5. Step 5: Solve for x
   x = 7,779,139,282.31/101,084.28
6. Step 6: Final answer
   x = 76,956.96