Finding the Fourth Proportional to 53,248.80, 79,887.78 and 42,192.48

Step by Step Solution

1. Step 1: Write the proportion equation
   53,248.80 : 79,887.78 = 42,192.48 : x
2. Step 2: Convert to fraction form
   53,248.80/79,887.78 = 42,192.48/x
3. Step 3: Cross multiply
   53,248.80x = 79,887.78 × 42,192.48
4. Step 4: Simplify right side
   53,248.80x = 3,370,663,559.89
5. Step 5: Solve for x
   x = 3,370,663,559.89/53,248.80
6. Step 6: Final answer
   x = 63,300.27