Finding the Fourth Proportional to 72,434.39, 108,692.69 and 39,153.65

Step by Step Solution

1. Step 1: Write the proportion equation
   72,434.39 : 108,692.69 = 39,153.65 : x
2. Step 2: Convert to fraction form
   72,434.39/108,692.69 = 39,153.65/x
3. Step 3: Cross multiply
   72,434.39x = 108,692.69 × 39,153.65
4. Step 4: Simplify right side
   72,434.39x = 4,255,714,802.59
5. Step 5: Solve for x
   x = 4,255,714,802.59/72,434.39
6. Step 6: Final answer
   x = 58,752.69