Finding the Fourth Proportional to 72,426.56, 99,958.05 and 40,602.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,426.56 : 99,958.05 = 40,602.06 : x
2. Step 2: Convert to fraction form
   72,426.56/99,958.05 = 40,602.06/x
3. Step 3: Cross multiply
   72,426.56x = 99,958.05 × 40,602.06
4. Step 4: Simplify right side
   72,426.56x = 4,058,502,743.58
5. Step 5: Solve for x
   x = 4,058,502,743.58/72,426.56
6. Step 6: Final answer
   x = 56,036.11