Finding the Fourth Proportional to 101,469.33, 140,022.72 and 56,146.47

Step by Step Solution

1. Step 1: Write the proportion equation
   101,469.33 : 140,022.72 = 56,146.47 : x
2. Step 2: Convert to fraction form
   101,469.33/140,022.72 = 56,146.47/x
3. Step 3: Cross multiply
   101,469.33x = 140,022.72 × 56,146.47
4. Step 4: Simplify right side
   101,469.33x = 7,861,781,447.80
5. Step 5: Solve for x
   x = 7,861,781,447.80/101,469.33
6. Step 6: Final answer
   x = 77,479.39