Finding the Fourth Proportional to 72,764.74, 109,188.96 and 30,641.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,764.74 : 109,188.96 = 30,641.50 : x
2. Step 2: Convert to fraction form
   72,764.74/109,188.96 = 30,641.50/x
3. Step 3: Cross multiply
   72,764.74x = 109,188.96 × 30,641.50
4. Step 4: Simplify right side
   72,764.74x = 3,345,713,517.84
5. Step 5: Solve for x
   x = 3,345,713,517.84/72,764.74
6. Step 6: Final answer
   x = 45,979.87