Finding the Fourth Proportional to 42,051.43, 63,089.32 and 12,469.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,051.43 : 63,089.32 = 12,469.98 : x
2. Step 2: Convert to fraction form
   42,051.43/63,089.32 = 12,469.98/x
3. Step 3: Cross multiply
   42,051.43x = 63,089.32 × 12,469.98
4. Step 4: Simplify right side
   42,051.43x = 786,722,558.61
5. Step 5: Solve for x
   x = 786,722,558.61/42,051.43
6. Step 6: Final answer
   x = 18,708.58