Finding the Fourth Proportional to 359,779.32, 539,574.89 and 106,991.69

Step by Step Solution

1. Step 1: Write the proportion equation
   359,779.32 : 539,574.89 = 106,991.69 : x
2. Step 2: Convert to fraction form
   359,779.32/539,574.89 = 106,991.69/x
3. Step 3: Cross multiply
   359,779.32x = 539,574.89 × 106,991.69
4. Step 4: Simplify right side
   359,779.32x = 57,730,026,129.83
5. Step 5: Solve for x
   x = 57,730,026,129.83/359,779.32
6. Step 6: Final answer
   x = 160,459.55