Finding the Fourth Proportional to 89,274.84, 123,208.98 and 57,038.91

Step by Step Solution

1. Step 1: Write the proportion equation
   89,274.84 : 123,208.98 = 57,038.91 : x
2. Step 2: Convert to fraction form
   89,274.84/123,208.98 = 57,038.91/x
3. Step 3: Cross multiply
   89,274.84x = 123,208.98 × 57,038.91
4. Step 4: Simplify right side
   89,274.84x = 7,027,705,921.41
5. Step 5: Solve for x
   x = 7,027,705,921.41/89,274.84
6. Step 6: Final answer
   x = 78,719.89