Finding the Fourth Proportional to 101,123.64, 139,549.50 and 55,801.98

Step by Step Solution

1. Step 1: Write the proportion equation
   101,123.64 : 139,549.50 = 55,801.98 : x
2. Step 2: Convert to fraction form
   101,123.64/139,549.50 = 55,801.98/x
3. Step 3: Cross multiply
   101,123.64x = 139,549.50 × 55,801.98
4. Step 4: Simplify right side
   101,123.64x = 7,787,138,408.01
5. Step 5: Solve for x
   x = 7,787,138,408.01/101,123.64
6. Step 6: Final answer
   x = 77,006.11