Finding the Fourth Proportional to 101,098.05, 139,513.98 and 55,777.95

Step by Step Solution

1. Step 1: Write the proportion equation
   101,098.05 : 139,513.98 = 55,777.95 : x
2. Step 2: Convert to fraction form
   101,098.05/139,513.98 = 55,777.95/x
3. Step 3: Cross multiply
   101,098.05x = 139,513.98 × 55,777.95
4. Step 4: Simplify right side
   101,098.05x = 7,781,803,800.74
5. Step 5: Solve for x
   x = 7,781,803,800.74/101,098.05
6. Step 6: Final answer
   x = 76,972.84