Finding the Fourth Proportional to 103,641.50, 143,025.28 and 58,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,641.50 : 143,025.28 = 58,929.50 : x
2. Step 2: Convert to fraction form
   103,641.50/143,025.28 = 58,929.50/x
3. Step 3: Cross multiply
   103,641.50x = 143,025.28 × 58,929.50
4. Step 4: Simplify right side
   103,641.50x = 8,428,408,237.76
5. Step 5: Solve for x
   x = 8,428,408,237.76/103,641.50
6. Step 6: Final answer
   x = 81,322.72