Finding the Fourth Proportional to 143,566.08, 215,112.16 and 83,425.74

Step by Step Solution

1. Step 1: Write the proportion equation
   143,566.08 : 215,112.16 = 83,425.74 : x
2. Step 2: Convert to fraction form
   143,566.08/215,112.16 = 83,425.74/x
3. Step 3: Cross multiply
   143,566.08x = 215,112.16 × 83,425.74
4. Step 4: Simplify right side
   143,566.08x = 17,945,891,131.00
5. Step 5: Solve for x
   x = 17,945,891,131.00/143,566.08
6. Step 6: Final answer
   x = 125,000.91