Finding the Fourth Proportional to 42,106.96, 63,171.48 and 12,525.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,106.96 : 63,171.48 = 12,525.04 : x
2. Step 2: Convert to fraction form
   42,106.96/63,171.48 = 12,525.04/x
3. Step 3: Cross multiply
   42,106.96x = 63,171.48 × 12,525.04
4. Step 4: Simplify right side
   42,106.96x = 791,225,313.86
5. Step 5: Solve for x
   x = 791,225,313.86/42,106.96
6. Step 6: Final answer
   x = 18,790.84