Finding the Fourth Proportional to 72.60, 108.69 and 46.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72.60 : 108.69 = 46.88 : x
2. Step 2: Convert to fraction form
   72.60/108.69 = 46.88/x
3. Step 3: Cross multiply
   72.60x = 108.69 × 46.88
4. Step 4: Simplify right side
   72.60x = 5,095.39
5. Step 5: Solve for x
   x = 5,095.39/72.60
6. Step 6: Final answer
   x = 70.18