Finding the Fourth Proportional to 72,503.85, 108,798.12 and 30,380.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,503.85 : 108,798.12 = 30,380.34 : x
2. Step 2: Convert to fraction form
   72,503.85/108,798.12 = 30,380.34/x
3. Step 3: Cross multiply
   72,503.85x = 108,798.12 × 30,380.34
4. Step 4: Simplify right side
   72,503.85x = 3,305,323,876.96
5. Step 5: Solve for x
   x = 3,305,323,876.96/72,503.85
6. Step 6: Final answer
   x = 45,588.25