Finding the Fourth Proportional to 143,890.50, 198,593.46 and 83,479.98

Step by Step Solution

1. Step 1: Write the proportion equation
   143,890.50 : 198,593.46 = 83,479.98 : x
2. Step 2: Convert to fraction form
   143,890.50/198,593.46 = 83,479.98/x
3. Step 3: Cross multiply
   143,890.50x = 198,593.46 × 83,479.98
4. Step 4: Simplify right side
   143,890.50x = 16,578,578,068.93
5. Step 5: Solve for x
   x = 16,578,578,068.93/143,890.50
6. Step 6: Final answer
   x = 115,216.63