Finding the Fourth Proportional to 103,542.72, 142,888.23 and 58,830.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,542.72 : 142,888.23 = 58,830.72 : x
2. Step 2: Convert to fraction form
   103,542.72/142,888.23 = 58,830.72/x
3. Step 3: Cross multiply
   103,542.72x = 142,888.23 × 58,830.72
4. Step 4: Simplify right side
   103,542.72x = 8,406,216,914.59
5. Step 5: Solve for x
   x = 8,406,216,914.59/103,542.72
6. Step 6: Final answer
   x = 81,185.98