Finding the Fourth Proportional to 127,665.59, 191,457.21 and 42,260.51

Step by Step Solution

1. Step 1: Write the proportion equation
   127,665.59 : 191,457.21 = 42,260.51 : x
2. Step 2: Convert to fraction form
   127,665.59/191,457.21 = 42,260.51/x
3. Step 3: Cross multiply
   127,665.59x = 191,457.21 × 42,260.51
4. Step 4: Simplify right side
   127,665.59x = 8,091,078,380.49
5. Step 5: Solve for x
   x = 8,091,078,380.49/127,665.59
6. Step 6: Final answer
   x = 63,377.13