Finding the Fourth Proportional to 60,700.78, 83,321.42 and 53,836.33

Step by Step Solution

1. Step 1: Write the proportion equation
   60,700.78 : 83,321.42 = 53,836.33 : x
2. Step 2: Convert to fraction form
   60,700.78/83,321.42 = 53,836.33/x
3. Step 3: Cross multiply
   60,700.78x = 83,321.42 × 53,836.33
4. Step 4: Simplify right side
   60,700.78x = 4,485,719,463.19
5. Step 5: Solve for x
   x = 4,485,719,463.19/60,700.78
6. Step 6: Final answer
   x = 73,898.88