Finding the Fourth Proportional to 103,539.98, 142,850.81 and 84,386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103,539.98 : 142,850.81 = 84,386.82 : x
2. Step 2: Convert to fraction form
   103,539.98/142,850.81 = 84,386.82/x
3. Step 3: Cross multiply
   103,539.98x = 142,850.81 × 84,386.82
4. Step 4: Simplify right side
   103,539.98x = 12,054,725,590.32
5. Step 5: Solve for x
   x = 12,054,725,590.32/103,539.98
6. Step 6: Final answer
   x = 116,425.81