Finding the Fourth Proportional to 42,122.72, 63,152.87 and 19,910.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,122.72 : 63,152.87 = 19,910.15 : x
2. Step 2: Convert to fraction form
   42,122.72/63,152.87 = 19,910.15/x
3. Step 3: Cross multiply
   42,122.72x = 63,152.87 × 19,910.15
4. Step 4: Simplify right side
   42,122.72x = 1,257,382,699.32
5. Step 5: Solve for x
   x = 1,257,382,699.32/42,122.72
6. Step 6: Final answer
   x = 29,850.46