Finding the Fourth Proportional to 103,215.52, 142,439.56 and 58,503.52

Step by Step Solution

1. Step 1: Write the proportion equation
   103,215.52 : 142,439.56 = 58,503.52 : x
2. Step 2: Convert to fraction form
   103,215.52/142,439.56 = 58,503.52/x
3. Step 3: Cross multiply
   103,215.52x = 142,439.56 × 58,503.52
4. Step 4: Simplify right side
   103,215.52x = 8,333,215,647.25
5. Step 5: Solve for x
   x = 8,333,215,647.25/103,215.52
6. Step 6: Final answer
   x = 80,736.07