Finding the Fourth Proportional to 89,687.37, 134,499.55 and 26,490.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89,687.37 : 134,499.55 = 26,490.63 : x
2. Step 2: Convert to fraction form
   89,687.37/134,499.55 = 26,490.63/x
3. Step 3: Cross multiply
   89,687.37x = 134,499.55 × 26,490.63
4. Step 4: Simplify right side
   89,687.37x = 3,562,977,814.22
5. Step 5: Solve for x
   x = 3,562,977,814.22/89,687.37
6. Step 6: Final answer
   x = 39,726.64