Finding the Fourth Proportional to 143,002.55, 197,435.96 and 88,612.43

Step by Step Solution

1. Step 1: Write the proportion equation
   143,002.55 : 197,435.96 = 88,612.43 : x
2. Step 2: Convert to fraction form
   143,002.55/197,435.96 = 88,612.43/x
3. Step 3: Cross multiply
   143,002.55x = 197,435.96 × 88,612.43
4. Step 4: Simplify right side
   143,002.55x = 17,495,279,741.92
5. Step 5: Solve for x
   x = 17,495,279,741.92/143,002.55
6. Step 6: Final answer
   x = 122,342.44