Finding the Fourth Proportional to 53,268.84, 79,778.78 and 42,100.60

Step by Step Solution

1. Step 1: Write the proportion equation
   53,268.84 : 79,778.78 = 42,100.60 : x
2. Step 2: Convert to fraction form
   53,268.84/79,778.78 = 42,100.60/x
3. Step 3: Cross multiply
   53,268.84x = 79,778.78 × 42,100.60
4. Step 4: Simplify right side
   53,268.84x = 3,358,734,505.27
5. Step 5: Solve for x
   x = 3,358,734,505.27/53,268.84
6. Step 6: Final answer
   x = 63,052.52