Finding the Fourth Proportional to 103,367.40, 142,645.16 and 58,045.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,367.40 : 142,645.16 = 58,045.72 : x
2. Step 2: Convert to fraction form
   103,367.40/142,645.16 = 58,045.72/x
3. Step 3: Cross multiply
   103,367.40x = 142,645.16 × 58,045.72
4. Step 4: Simplify right side
   103,367.40x = 8,279,941,016.72
5. Step 5: Solve for x
   x = 8,279,941,016.72/103,367.40
6. Step 6: Final answer
   x = 80,102.05