Finding the Fourth Proportional to 103,298.37, 142,635.78 and 84,180.96

Step by Step Solution

1. Step 1: Write the proportion equation
   103,298.37 : 142,635.78 = 84,180.96 : x
2. Step 2: Convert to fraction form
   103,298.37/142,635.78 = 84,180.96/x
3. Step 3: Cross multiply
   103,298.37x = 142,635.78 × 84,180.96
4. Step 4: Simplify right side
   103,298.37x = 12,007,216,890.75
5. Step 5: Solve for x
   x = 12,007,216,890.75/103,298.37
6. Step 6: Final answer
   x = 116,238.20