Finding the Fourth Proportional to 72,490.56, 108,741.92 and 30,937.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,490.56 : 108,741.92 = 30,937.92 : x
2. Step 2: Convert to fraction form
   72,490.56/108,741.92 = 30,937.92/x
3. Step 3: Cross multiply
   72,490.56x = 108,741.92 × 30,937.92
4. Step 4: Simplify right side
   72,490.56x = 3,364,248,821.61
5. Step 5: Solve for x
   x = 3,364,248,821.61/72,490.56
6. Step 6: Final answer
   x = 46,409.47