Finding the Fourth Proportional to 72,436.12, 99,961.52 and 40,605.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,436.12 : 99,961.52 = 40,605.01 : x
2. Step 2: Convert to fraction form
   72,436.12/99,961.52 = 40,605.01/x
3. Step 3: Cross multiply
   72,436.12x = 99,961.52 × 40,605.01
4. Step 4: Simplify right side
   72,436.12x = 4,058,938,066.29
5. Step 5: Solve for x
   x = 4,058,938,066.29/72,436.12
6. Step 6: Final answer
   x = 56,034.73