Finding the Fourth Proportional to 72,613.58, 108,962.99 and 30,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,613.58 : 108,962.99 = 30,490.42 : x
2. Step 2: Convert to fraction form
   72,613.58/108,962.99 = 30,490.42/x
3. Step 3: Cross multiply
   72,613.58x = 108,962.99 × 30,490.42
4. Step 4: Simplify right side
   72,613.58x = 3,322,326,784.74
5. Step 5: Solve for x
   x = 3,322,326,784.74/72,613.58
6. Step 6: Final answer
   x = 45,753.52