Finding the Fourth Proportional to 42,059.30, 63,079.22 and 12,470.00

Step by Step Solution

1. Step 1: Write the proportion equation
   42,059.30 : 63,079.22 = 12,470.00 : x
2. Step 2: Convert to fraction form
   42,059.30/63,079.22 = 12,470.00/x
3. Step 3: Cross multiply
   42,059.30x = 63,079.22 × 12,470.00
4. Step 4: Simplify right side
   42,059.30x = 786,597,495.65
5. Step 5: Solve for x
   x = 786,597,495.65/42,059.30
6. Step 6: Final answer
   x = 18,702.11