Finding the Fourth Proportional to 103,636.95, 143,018.72 and 58,315.02

Step by Step Solution

1. Step 1: Write the proportion equation
   103,636.95 : 143,018.72 = 58,315.02 : x
2. Step 2: Convert to fraction form
   103,636.95/143,018.72 = 58,315.02/x
3. Step 3: Cross multiply
   103,636.95x = 143,018.72 × 58,315.02
4. Step 4: Simplify right side
   103,636.95x = 8,340,139,517.17
5. Step 5: Solve for x
   x = 8,340,139,517.17/103,636.95
6. Step 6: Final answer
   x = 80,474.58