Finding the Fourth Proportional to 42,054.78, 63,082.32 and 12,472.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,054.78 : 63,082.32 = 12,472.88 : x
2. Step 2: Convert to fraction form
   42,054.78/63,082.32 = 12,472.88/x
3. Step 3: Cross multiply
   42,054.78x = 63,082.32 × 12,472.88
4. Step 4: Simplify right side
   42,054.78x = 786,817,892.07
5. Step 5: Solve for x
   x = 786,817,892.07/42,054.78
6. Step 6: Final answer
   x = 18,709.36