Finding the Fourth Proportional to 42,173.96, 63,258.78 and 12,592.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,173.96 : 63,258.78 = 12,592.04 : x
2. Step 2: Convert to fraction form
   42,173.96/63,258.78 = 12,592.04/x
3. Step 3: Cross multiply
   42,173.96x = 63,258.78 × 12,592.04
4. Step 4: Simplify right side
   42,173.96x = 796,557,088.11
5. Step 5: Solve for x
   x = 796,557,088.11/42,173.96
6. Step 6: Final answer
   x = 18,887.42