Finding the Fourth Proportional to 89,404.56, 123,364.80 and 53,586.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,404.56 : 123,364.80 = 53,586.72 : x
2. Step 2: Convert to fraction form
   89,404.56/123,364.80 = 53,586.72/x
3. Step 3: Cross multiply
   89,404.56x = 123,364.80 × 53,586.72
4. Step 4: Simplify right side
   89,404.56x = 6,610,714,995.46
5. Step 5: Solve for x
   x = 6,610,714,995.46/89,404.56
6. Step 6: Final answer
   x = 73,941.59