Finding the Fourth Proportional to 42,050.72, 63,075.76 and 12,468.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,050.72 : 63,075.76 = 12,468.64 : x
2. Step 2: Convert to fraction form
   42,050.72/63,075.76 = 12,468.64/x
3. Step 3: Cross multiply
   42,050.72x = 63,075.76 × 12,468.64
4. Step 4: Simplify right side
   42,050.72x = 786,468,944.17
5. Step 5: Solve for x
   x = 786,468,944.17/42,050.72
6. Step 6: Final answer
   x = 18,702.87