Finding the Fourth Proportional to 152.37, 228.31 and 83.71

Step by Step Solution

1. Step 1: Write the proportion equation
   152.37 : 228.31 = 83.71 : x
2. Step 2: Convert to fraction form
   152.37/228.31 = 83.71/x
3. Step 3: Cross multiply
   152.37x = 228.31 × 83.71
4. Step 4: Simplify right side
   152.37x = 19,111.83
5. Step 5: Solve for x
   x = 19,111.83/152.37
6. Step 6: Final answer
   x = 125.43