Finding the Fourth Proportional to 101,869.32, 140,573 and 56,545.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,869.32 : 140,573 = 56,545.10 : x
2. Step 2: Convert to fraction form
   101,869.32/140,573 = 56,545.10/x
3. Step 3: Cross multiply
   101,869.32x = 140,573 × 56,545.10
4. Step 4: Simplify right side
   101,869.32x = 7,948,714,342.30
5. Step 5: Solve for x
   x = 7,948,714,342.30/101,869.32
6. Step 6: Final answer
   x = 78,028.54