Finding the Fourth Proportional to 101,493.22, 140,059.61 and 56,171.29

Step by Step Solution

1. Step 1: Write the proportion equation
   101,493.22 : 140,059.61 = 56,171.29 : x
2. Step 2: Convert to fraction form
   101,493.22/140,059.61 = 56,171.29/x
3. Step 3: Cross multiply
   101,493.22x = 140,059.61 × 56,171.29
4. Step 4: Simplify right side
   101,493.22x = 7,867,328,339.59
5. Step 5: Solve for x
   x = 7,867,328,339.59/101,493.22
6. Step 6: Final answer
   x = 77,515.80