Finding the Fourth Proportional to 77,572.82, 107,018.61 and 49,268.18

Step by Step Solution

1. Step 1: Write the proportion equation
   77,572.82 : 107,018.61 = 49,268.18 : x
2. Step 2: Convert to fraction form
   77,572.82/107,018.61 = 49,268.18/x
3. Step 3: Cross multiply
   77,572.82x = 107,018.61 × 49,268.18
4. Step 4: Simplify right side
   77,572.82x = 5,272,612,140.83
5. Step 5: Solve for x
   x = 5,272,612,140.83/77,572.82
6. Step 6: Final answer
   x = 67,969.84