Finding the Fourth Proportional to 53,357.95, 80,147.50 and 42,342.15

Step by Step Solution

1. Step 1: Write the proportion equation
   53,357.95 : 80,147.50 = 42,342.15 : x
2. Step 2: Convert to fraction form
   53,357.95/80,147.50 = 42,342.15/x
3. Step 3: Cross multiply
   53,357.95x = 80,147.50 × 42,342.15
4. Step 4: Simplify right side
   53,357.95x = 3,393,617,661.82
5. Step 5: Solve for x
   x = 3,393,617,661.82/53,357.95
6. Step 6: Final answer
   x = 63,600.97