Finding the Fourth Proportional to 42,104.61, 63,157.98 and 12,522.70

Step by Step Solution

1. Step 1: Write the proportion equation
   42,104.61 : 63,157.98 = 12,522.70 : x
2. Step 2: Convert to fraction form
   42,104.61/63,157.98 = 12,522.70/x
3. Step 3: Cross multiply
   42,104.61x = 63,157.98 × 12,522.70
4. Step 4: Simplify right side
   42,104.61x = 790,908,491.61
5. Step 5: Solve for x
   x = 790,908,491.61/42,104.61
6. Step 6: Final answer
   x = 18,784.37