Finding the Fourth Proportional to 230,279.34, 345,431.34 and 72,520.08

Step by Step Solution

1. Step 1: Write the proportion equation
   230,279.34 : 345,431.34 = 72,520.08 : x
2. Step 2: Convert to fraction form
   230,279.34/345,431.34 = 72,520.08/x
3. Step 3: Cross multiply
   230,279.34x = 345,431.34 × 72,520.08
4. Step 4: Simplify right side
   230,279.34x = 25,050,708,411.31
5. Step 5: Solve for x
   x = 25,050,708,411.31/230,279.34
6. Step 6: Final answer
   x = 108,784.00