Finding the Fourth Proportional to 72,430, 108,654.72 and 30,886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,430 : 108,654.72 = 30,886.72 : x
2. Step 2: Convert to fraction form
   72,430/108,654.72 = 30,886.72/x
3. Step 3: Cross multiply
   72,430x = 108,654.72 × 30,886.72
4. Step 4: Simplify right side
   72,430x = 3,355,987,913.32
5. Step 5: Solve for x
   x = 3,355,987,913.32/72,430
6. Step 6: Final answer
   x = 46,334.22