Finding the Fourth Proportional to 77,796.72, 107,361.66 and 47,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,796.72 : 107,361.66 = 47,581.50 : x
2. Step 2: Convert to fraction form
   77,796.72/107,361.66 = 47,581.50/x
3. Step 3: Cross multiply
   77,796.72x = 107,361.66 × 47,581.50
4. Step 4: Simplify right side
   77,796.72x = 5,108,428,825.29
5. Step 5: Solve for x
   x = 5,108,428,825.29/77,796.72
6. Step 6: Final answer
   x = 65,663.81