Finding the Fourth Proportional to 101,118.57, 139,538.18 and 55,787.67

Step by Step Solution

1. Step 1: Write the proportion equation
   101,118.57 : 139,538.18 = 55,787.67 : x
2. Step 2: Convert to fraction form
   101,118.57/139,538.18 = 55,787.67/x
3. Step 3: Cross multiply
   101,118.57x = 139,538.18 × 55,787.67
4. Step 4: Simplify right side
   101,118.57x = 7,784,509,659.30
5. Step 5: Solve for x
   x = 7,784,509,659.30/101,118.57
6. Step 6: Final answer
   x = 76,983.98