Finding the Fourth Proportional to 326,036.61, 488,709.72 and 109,689.39

Step by Step Solution

1. Step 1: Write the proportion equation
   326,036.61 : 488,709.72 = 109,689.39 : x
2. Step 2: Convert to fraction form
   326,036.61/488,709.72 = 109,689.39/x
3. Step 3: Cross multiply
   326,036.61x = 488,709.72 × 109,689.39
4. Step 4: Simplify right side
   326,036.61x = 53,606,271,073.87
5. Step 5: Solve for x
   x = 53,606,271,073.87/326,036.61
6. Step 6: Final answer
   x = 164,417.95