Finding the Fourth Proportional to 103,978.50, 156,036.87 and 38,314.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,978.50 : 156,036.87 = 38,314.50 : x
2. Step 2: Convert to fraction form
   103,978.50/156,036.87 = 38,314.50/x
3. Step 3: Cross multiply
   103,978.50x = 156,036.87 × 38,314.50
4. Step 4: Simplify right side
   103,978.50x = 5,978,474,655.62
5. Step 5: Solve for x
   x = 5,978,474,655.62/103,978.50
6. Step 6: Final answer
   x = 57,497.22