Finding the Fourth Proportional to 89,772.78, 134,510.37 and 54,606.06

Step by Step Solution

1. Step 1: Write the proportion equation
   89,772.78 : 134,510.37 = 54,606.06 : x
2. Step 2: Convert to fraction form
   89,772.78/134,510.37 = 54,606.06/x
3. Step 3: Cross multiply
   89,772.78x = 134,510.37 × 54,606.06
4. Step 4: Simplify right side
   89,772.78x = 7,345,081,334.84
5. Step 5: Solve for x
   x = 7,345,081,334.84/89,772.78
6. Step 6: Final answer
   x = 81,818.58