Finding the Fourth Proportional to 123,232.12, 170,103.92 and 72,931

Step by Step Solution

1. Step 1: Write the proportion equation
   123,232.12 : 170,103.92 = 72,931 : x
2. Step 2: Convert to fraction form
   123,232.12/170,103.92 = 72,931/x
3. Step 3: Cross multiply
   123,232.12x = 170,103.92 × 72,931
4. Step 4: Simplify right side
   123,232.12x = 12,405,848,989.52
5. Step 5: Solve for x
   x = 12,405,848,989.52/123,232.12
6. Step 6: Final answer
   x = 100,670.58