Finding the Fourth Proportional to 94.55, 142.01 and 78.53

Step by Step Solution

1. Step 1: Write the proportion equation
   94.55 : 142.01 = 78.53 : x
2. Step 2: Convert to fraction form
   94.55/142.01 = 78.53/x
3. Step 3: Cross multiply
   94.55x = 142.01 × 78.53
4. Step 4: Simplify right side
   94.55x = 11,150.94
5. Step 5: Solve for x
   x = 11,150.94/94.55
6. Step 6: Final answer
   x = 117.94