Finding the Fourth Proportional to 89,431.02, 123,417.68 and 49,148.51

Step by Step Solution

1. Step 1: Write the proportion equation
   89,431.02 : 123,417.68 = 49,148.51 : x
2. Step 2: Convert to fraction form
   89,431.02/123,417.68 = 49,148.51/x
3. Step 3: Cross multiply
   89,431.02x = 123,417.68 × 49,148.51
4. Step 4: Simplify right side
   89,431.02x = 6,065,794,216.83
5. Step 5: Solve for x
   x = 6,065,794,216.83/89,431.02
6. Step 6: Final answer
   x = 67,826.51