Finding the Fourth Proportional to 42,389.78, 63,838.50 and 38,606.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,389.78 : 63,838.50 = 38,606.36 : x
2. Step 2: Convert to fraction form
   42,389.78/63,838.50 = 38,606.36/x
3. Step 3: Cross multiply
   42,389.78x = 63,838.50 × 38,606.36
4. Step 4: Simplify right side
   42,389.78x = 2,464,571,793.67
5. Step 5: Solve for x
   x = 2,464,571,793.67/42,389.78
6. Step 6: Final answer
   x = 58,140.70