Finding the Fourth Proportional to 103,290.72, 142,464.79 and 67,001.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,290.72 : 142,464.79 = 67,001.10 : x
2. Step 2: Convert to fraction form
   103,290.72/142,464.79 = 67,001.10/x
3. Step 3: Cross multiply
   103,290.72x = 142,464.79 × 67,001.10
4. Step 4: Simplify right side
   103,290.72x = 9,545,297,641.27
5. Step 5: Solve for x
   x = 9,545,297,641.27/103,290.72
6. Step 6: Final answer
   x = 92,411.96