Finding the Fourth Proportional to 101,865, 140,567.22 and 56,543.88

Step by Step Solution

1. Step 1: Write the proportion equation
   101,865 : 140,567.22 = 56,543.88 : x
2. Step 2: Convert to fraction form
   101,865/140,567.22 = 56,543.88/x
3. Step 3: Cross multiply
   101,865x = 140,567.22 × 56,543.88
4. Step 4: Simplify right side
   101,865x = 7,948,216,019.61
5. Step 5: Solve for x
   x = 7,948,216,019.61/101,865
6. Step 6: Final answer
   x = 78,026.96