Finding the Fourth Proportional to 103,538.98, 142,849.43 and 84,385.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103,538.98 : 142,849.43 = 84,385.82 : x
2. Step 2: Convert to fraction form
   103,538.98/142,849.43 = 84,385.82/x
3. Step 3: Cross multiply
   103,538.98x = 142,849.43 × 84,385.82
4. Step 4: Simplify right side
   103,538.98x = 12,054,466,287.08
5. Step 5: Solve for x
   x = 12,054,466,287.08/103,538.98
6. Step 6: Final answer
   x = 116,424.43