Finding the Fourth Proportional to 53,253.86, 79,756.25 and 42,085.58

Step by Step Solution

1. Step 1: Write the proportion equation
   53,253.86 : 79,756.25 = 42,085.58 : x
2. Step 2: Convert to fraction form
   53,253.86/79,756.25 = 42,085.58/x
3. Step 3: Cross multiply
   53,253.86x = 79,756.25 × 42,085.58
4. Step 4: Simplify right side
   53,253.86x = 3,356,587,430.67
5. Step 5: Solve for x
   x = 3,356,587,430.67/53,253.86
6. Step 6: Final answer
   x = 63,029.94