Finding the Fourth Proportional to 42,515.82, 63,751.86 and 19,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,515.82 : 63,751.86 = 19,129.50 : x
2. Step 2: Convert to fraction form
   42,515.82/63,751.86 = 19,129.50/x
3. Step 3: Cross multiply
   42,515.82x = 63,751.86 × 19,129.50
4. Step 4: Simplify right side
   42,515.82x = 1,219,541,205.87
5. Step 5: Solve for x
   x = 1,219,541,205.87/42,515.82
6. Step 6: Final answer
   x = 28,684.41