Finding the Fourth Proportional to 42,397.16, 63,525.06 and 18,669.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,397.16 : 63,525.06 = 18,669.42 : x
2. Step 2: Convert to fraction form
   42,397.16/63,525.06 = 18,669.42/x
3. Step 3: Cross multiply
   42,397.16x = 63,525.06 × 18,669.42
4. Step 4: Simplify right side
   42,397.16x = 1,185,976,025.67
5. Step 5: Solve for x
   x = 1,185,976,025.67/42,397.16
6. Step 6: Final answer
   x = 27,973.01