Finding the Fourth Proportional to 130,615.83, 180,238.32 and 72,474.03

Step by Step Solution

1. Step 1: Write the proportion equation
   130,615.83 : 180,238.32 = 72,474.03 : x
2. Step 2: Convert to fraction form
   130,615.83/180,238.32 = 72,474.03/x
3. Step 3: Cross multiply
   130,615.83x = 180,238.32 × 72,474.03
4. Step 4: Simplify right side
   130,615.83x = 13,062,597,410.83
5. Step 5: Solve for x
   x = 13,062,597,410.83/130,615.83
6. Step 6: Final answer
   x = 100,007.77