Finding the Fourth Proportional to 108,557.36, 149,791.74 and 60,812.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,557.36 : 149,791.74 = 60,812.72 : x
2. Step 2: Convert to fraction form
   108,557.36/149,791.74 = 60,812.72/x
3. Step 3: Cross multiply
   108,557.36x = 149,791.74 × 60,812.72
4. Step 4: Simplify right side
   108,557.36x = 9,109,243,142.93
5. Step 5: Solve for x
   x = 9,109,243,142.93/108,557.36
6. Step 6: Final answer
   x = 83,911.80