Finding the Fourth Proportional to 101,940.48, 152,636.64 and 83,142.96

Step by Step Solution

1. Step 1: Write the proportion equation
   101,940.48 : 152,636.64 = 83,142.96 : x
2. Step 2: Convert to fraction form
   101,940.48/152,636.64 = 83,142.96/x
3. Step 3: Cross multiply
   101,940.48x = 152,636.64 × 83,142.96
4. Step 4: Simplify right side
   101,940.48x = 12,690,662,054.05
5. Step 5: Solve for x
   x = 12,690,662,054.05/101,940.48
6. Step 6: Final answer
   x = 124,490.90