Finding the Fourth Proportional to 78.53, 117.72 and 37.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78.53 : 117.72 = 37.94 : x
2. Step 2: Convert to fraction form
   78.53/117.72 = 37.94/x
3. Step 3: Cross multiply
   78.53x = 117.72 × 37.94
4. Step 4: Simplify right side
   78.53x = 4,465.71
5. Step 5: Solve for x
   x = 4,465.71/78.53
6. Step 6: Final answer
   x = 56.87