Finding the Fourth Proportional to 56,876, 78,479.16 and 32,997.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,876 : 78,479.16 = 32,997.20 : x
2. Step 2: Convert to fraction form
   56,876/78,479.16 = 32,997.20/x
3. Step 3: Cross multiply
   56,876x = 78,479.16 × 32,997.20
4. Step 4: Simplify right side
   56,876x = 2,589,592,538.35
5. Step 5: Solve for x
   x = 2,589,592,538.35/56,876
6. Step 6: Final answer
   x = 45,530.50