Finding the Fourth Proportional to 73.12, 100.84 and 59.30

Step by Step Solution

1. Step 1: Write the proportion equation
   73.12 : 100.84 = 59.30 : x
2. Step 2: Convert to fraction form
   73.12/100.84 = 59.30/x
3. Step 3: Cross multiply
   73.12x = 100.84 × 59.30
4. Step 4: Simplify right side
   73.12x = 5,979.81
5. Step 5: Solve for x
   x = 5,979.81/73.12
6. Step 6: Final answer
   x = 81.78