Finding the Fourth Proportional to 72,270,279, 99,733,111.56 and 39,230,550.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,270,279 : 99,733,111.56 = 39,230,550.52 : x
2. Step 2: Convert to fraction form
   72,270,279/99,733,111.56 = 39,230,550.52/x
3. Step 3: Cross multiply
   72,270,279x = 99,733,111.56 × 39,230,550.52
4. Step 4: Simplify right side
   72,270,279x = 3,912,584,871,571,376.50
5. Step 5: Solve for x
   x = 3,912,584,871,571,376.50/72,270,279
6. Step 6: Final answer
   x = 54,138,228.41