Finding the Fourth Proportional to 101,300.32, 139,793.68 and 55,981.36

Step by Step Solution

1. Step 1: Write the proportion equation
   101,300.32 : 139,793.68 = 55,981.36 : x
2. Step 2: Convert to fraction form
   101,300.32/139,793.68 = 55,981.36/x
3. Step 3: Cross multiply
   101,300.32x = 139,793.68 × 55,981.36
4. Step 4: Simplify right side
   101,300.32x = 7,825,840,325.80
5. Step 5: Solve for x
   x = 7,825,840,325.80/101,300.32
6. Step 6: Final answer
   x = 77,253.86