Finding the Fourth Proportional to 103,404.65, 142,708.86 and 63,141.98

Step by Step Solution

1. Step 1: Write the proportion equation
   103,404.65 : 142,708.86 = 63,141.98 : x
2. Step 2: Convert to fraction form
   103,404.65/142,708.86 = 63,141.98/x
3. Step 3: Cross multiply
   103,404.65x = 142,708.86 × 63,141.98
4. Step 4: Simplify right side
   103,404.65x = 9,010,919,270.40
5. Step 5: Solve for x
   x = 9,010,919,270.40/103,404.65
6. Step 6: Final answer
   x = 87,142.31