Finding the Fourth Proportional to 103,542.98, 142,854.94 and 84,389.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103,542.98 : 142,854.94 = 84,389.82 : x
2. Step 2: Convert to fraction form
   103,542.98/142,854.94 = 84,389.82/x
3. Step 3: Cross multiply
   103,542.98x = 142,854.94 × 84,389.82
4. Step 4: Simplify right side
   103,542.98x = 12,055,502,672.71
5. Step 5: Solve for x
   x = 12,055,502,672.71/103,542.98
6. Step 6: Final answer
   x = 116,429.94