Finding the Fourth Proportional to 71.33, 106.83 and 59.93

Step by Step Solution

1. Step 1: Write the proportion equation
   71.33 : 106.83 = 59.93 : x
2. Step 2: Convert to fraction form
   71.33/106.83 = 59.93/x
3. Step 3: Cross multiply
   71.33x = 106.83 × 59.93
4. Step 4: Simplify right side
   71.33x = 6,402.59
5. Step 5: Solve for x
   x = 6,402.59/71.33
6. Step 6: Final answer
   x = 89.77