Finding the Fourth Proportional to 103,631.50, 143,011.48 and 58,919.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,631.50 : 143,011.48 = 58,919.50 : x
2. Step 2: Convert to fraction form
   103,631.50/143,011.48 = 58,919.50/x
3. Step 3: Cross multiply
   103,631.50x = 143,011.48 × 58,919.50
4. Step 4: Simplify right side
   103,631.50x = 8,426,164,895.86
5. Step 5: Solve for x
   x = 8,426,164,895.86/103,631.50
6. Step 6: Final answer
   x = 81,308.92