Finding the Fourth Proportional to 112,308.90, 168,194.78 and 64,779.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,308.90 : 168,194.78 = 64,779.92 : x
2. Step 2: Convert to fraction form
   112,308.90/168,194.78 = 64,779.92/x
3. Step 3: Cross multiply
   112,308.90x = 168,194.78 × 64,779.92
4. Step 4: Simplify right side
   112,308.90x = 10,895,644,392.82
5. Step 5: Solve for x
   x = 10,895,644,392.82/112,308.90
6. Step 6: Final answer
   x = 97,014.97