Finding the Fourth Proportional to 163,978.29, 245,708.36 and 123,807.15

Step by Step Solution

1. Step 1: Write the proportion equation
   163,978.29 : 245,708.36 = 123,807.15 : x
2. Step 2: Convert to fraction form
   163,978.29/245,708.36 = 123,807.15/x
3. Step 3: Cross multiply
   163,978.29x = 245,708.36 × 123,807.15
4. Step 4: Simplify right side
   163,978.29x = 30,420,451,782.77
5. Step 5: Solve for x
   x = 30,420,451,782.77/163,978.29
6. Step 6: Final answer
   x = 185,515.12