Finding the Fourth Proportional to 82,242, 123,451.80 and 40,776.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,242 : 123,451.80 = 40,776.72 : x
2. Step 2: Convert to fraction form
   82,242/123,451.80 = 40,776.72/x
3. Step 3: Cross multiply
   82,242x = 123,451.80 × 40,776.72
4. Step 4: Simplify right side
   82,242x = 5,033,959,482.10
5. Step 5: Solve for x
   x = 5,033,959,482.10/82,242
6. Step 6: Final answer
   x = 61,209.11