Finding the Fourth Proportional to 42,115.50, 63,191.70 and 19,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,115.50 : 63,191.70 = 19,944.72 : x
2. Step 2: Convert to fraction form
   42,115.50/63,191.70 = 19,944.72/x
3. Step 3: Cross multiply
   42,115.50x = 63,191.70 × 19,944.72
4. Step 4: Simplify right side
   42,115.50x = 1,260,340,762.82
5. Step 5: Solve for x
   x = 1,260,340,762.82/42,115.50
6. Step 6: Final answer
   x = 29,925.82