Finding the Fourth Proportional to 112,779.63, 169,116.46 and 65,408.18

Step by Step Solution

1. Step 1: Write the proportion equation
   112,779.63 : 169,116.46 = 65,408.18 : x
2. Step 2: Convert to fraction form
   112,779.63/169,116.46 = 65,408.18/x
3. Step 3: Cross multiply
   112,779.63x = 169,116.46 × 65,408.18
4. Step 4: Simplify right side
   112,779.63x = 11,061,598,847.54
5. Step 5: Solve for x
   x = 11,061,598,847.54/112,779.63
6. Step 6: Final answer
   x = 98,081.53