Finding the Fourth Proportional to 101,084.49, 139,494.32 and 55,766.78

Step by Step Solution

1. Step 1: Write the proportion equation
   101,084.49 : 139,494.32 = 55,766.78 : x
2. Step 2: Convert to fraction form
   101,084.49/139,494.32 = 55,766.78/x
3. Step 3: Cross multiply
   101,084.49x = 139,494.32 × 55,766.78
4. Step 4: Simplify right side
   101,084.49x = 7,779,148,810.61
5. Step 5: Solve for x
   x = 7,779,148,810.61/101,084.49
6. Step 6: Final answer
   x = 76,956.90