Finding the Fourth Proportional to 103,622.69, 142,999.31 and 58,910.69

Step by Step Solution

1. Step 1: Write the proportion equation
   103,622.69 : 142,999.31 = 58,910.69 : x
2. Step 2: Convert to fraction form
   103,622.69/142,999.31 = 58,910.69/x
3. Step 3: Cross multiply
   103,622.69x = 142,999.31 × 58,910.69
4. Step 4: Simplify right side
   103,622.69x = 8,424,188,021.62
5. Step 5: Solve for x
   x = 8,424,188,021.62/103,622.69
6. Step 6: Final answer
   x = 81,296.75