Finding the Fourth Proportional to 123,315.32, 184,987.20 and 43,328.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,315.32 : 184,987.20 = 43,328.72 : x
2. Step 2: Convert to fraction form
   123,315.32/184,987.20 = 43,328.72/x
3. Step 3: Cross multiply
   123,315.32x = 184,987.20 × 43,328.72
4. Step 4: Simplify right side
   123,315.32x = 8,015,258,592.38
5. Step 5: Solve for x
   x = 8,015,258,592.38/123,315.32
6. Step 6: Final answer
   x = 64,998.08