Finding the Fourth Proportional to 90.42, 124.72 and 59.32

Step by Step Solution

1. Step 1: Write the proportion equation
   90.42 : 124.72 = 59.32 : x
2. Step 2: Convert to fraction form
   90.42/124.72 = 59.32/x
3. Step 3: Cross multiply
   90.42x = 124.72 × 59.32
4. Step 4: Simplify right side
   90.42x = 7,398.39
5. Step 5: Solve for x
   x = 7,398.39/90.42
6. Step 6: Final answer
   x = 81.82