Finding the Fourth Proportional to 101,899.55, 140,618.71 and 56,576.37

Step by Step Solution

1. Step 1: Write the proportion equation
   101,899.55 : 140,618.71 = 56,576.37 : x
2. Step 2: Convert to fraction form
   101,899.55/140,618.71 = 56,576.37/x
3. Step 3: Cross multiply
   101,899.55x = 140,618.71 × 56,576.37
4. Step 4: Simplify right side
   101,899.55x = 7,955,695,892.23
5. Step 5: Solve for x
   x = 7,955,695,892.23/101,899.55
6. Step 6: Final answer
   x = 78,073.90