Finding the Fourth Proportional to 127,388.07, 191,109.59 and 38,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   127,388.07 : 191,109.59 = 38,648.72 : x
2. Step 2: Convert to fraction form
   127,388.07/191,109.59 = 38,648.72/x
3. Step 3: Cross multiply
   127,388.07x = 191,109.59 × 38,648.72
4. Step 4: Simplify right side
   127,388.07x = 7,386,141,607.62
5. Step 5: Solve for x
   x = 7,386,141,607.62/127,388.07
6. Step 6: Final answer
   x = 57,981.42