Finding the Fourth Proportional to 101,098.98, 139,517.06 and 55,777.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,098.98 : 139,517.06 = 55,777.50 : x
2. Step 2: Convert to fraction form
   101,098.98/139,517.06 = 55,777.50/x
3. Step 3: Cross multiply
   101,098.98x = 139,517.06 × 55,777.50
4. Step 4: Simplify right side
   101,098.98x = 7,781,912,535.26
5. Step 5: Solve for x
   x = 7,781,912,535.26/101,098.98
6. Step 6: Final answer
   x = 76,973.21