Finding the Fourth Proportional to 72,499.32, 100,062.72 and 47,305.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,499.32 : 100,062.72 = 47,305.08 : x
2. Step 2: Convert to fraction form
   72,499.32/100,062.72 = 47,305.08/x
3. Step 3: Cross multiply
   72,499.32x = 100,062.72 × 47,305.08
4. Step 4: Simplify right side
   72,499.32x = 4,733,474,974.62
5. Step 5: Solve for x
   x = 4,733,474,974.62/72,499.32
6. Step 6: Final answer
   x = 65,289.92