Finding the Fourth Proportional to 127,513.50, 191,228.90 and 42,105.15

Step by Step Solution

1. Step 1: Write the proportion equation
   127,513.50 : 191,228.90 = 42,105.15 : x
2. Step 2: Convert to fraction form
   127,513.50/191,228.90 = 42,105.15/x
3. Step 3: Cross multiply
   127,513.50x = 191,228.90 × 42,105.15
4. Step 4: Simplify right side
   127,513.50x = 8,051,721,308.31
5. Step 5: Solve for x
   x = 8,051,721,308.31/127,513.50
6. Step 6: Final answer
   x = 63,144.07