Finding the Fourth Proportional to 127.51, 175.89 and 78.37

Step by Step Solution

1. Step 1: Write the proportion equation
   127.51 : 175.89 = 78.37 : x
2. Step 2: Convert to fraction form
   127.51/175.89 = 78.37/x
3. Step 3: Cross multiply
   127.51x = 175.89 × 78.37
4. Step 4: Simplify right side
   127.51x = 13,784.50
5. Step 5: Solve for x
   x = 13,784.50/127.51
6. Step 6: Final answer
   x = 108.11