Finding the Fourth Proportional to 142,445.61, 196,613.82 and 88,698.87

Step by Step Solution

1. Step 1: Write the proportion equation
   142,445.61 : 196,613.82 = 88,698.87 : x
2. Step 2: Convert to fraction form
   142,445.61/196,613.82 = 88,698.87/x
3. Step 3: Cross multiply
   142,445.61x = 196,613.82 × 88,698.87
4. Step 4: Simplify right side
   142,445.61x = 17,439,423,660.38
5. Step 5: Solve for x
   x = 17,439,423,660.38/142,445.61
6. Step 6: Final answer
   x = 122,428.65