Finding the Fourth Proportional to 152.63, 228.89 and 61.31

Step by Step Solution

1. Step 1: Write the proportion equation
   152.63 : 228.89 = 61.31 : x
2. Step 2: Convert to fraction form
   152.63/228.89 = 61.31/x
3. Step 3: Cross multiply
   152.63x = 228.89 × 61.31
4. Step 4: Simplify right side
   152.63x = 14,032.94
5. Step 5: Solve for x
   x = 14,032.94/152.63
6. Step 6: Final answer
   x = 91.94