Finding the Fourth Proportional to 103,530.32, 142,879.56 and 58,213.52

Step by Step Solution

1. Step 1: Write the proportion equation
   103,530.32 : 142,879.56 = 58,213.52 : x
2. Step 2: Convert to fraction form
   103,530.32/142,879.56 = 58,213.52/x
3. Step 3: Cross multiply
   103,530.32x = 142,879.56 × 58,213.52
4. Step 4: Simplify right side
   103,530.32x = 8,317,522,123.65
5. Step 5: Solve for x
   x = 8,317,522,123.65/103,530.32
6. Step 6: Final answer
   x = 80,339.00