Finding the Fourth Proportional to 112,309.90, 168,196.28 and 64,780.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,309.90 : 168,196.28 = 64,780.92 : x
2. Step 2: Convert to fraction form
   112,309.90/168,196.28 = 64,780.92/x
3. Step 3: Cross multiply
   112,309.90x = 168,196.28 × 64,780.92
4. Step 4: Simplify right side
   112,309.90x = 10,895,909,758.98
5. Step 5: Solve for x
   x = 10,895,909,758.98/112,309.90
6. Step 6: Final answer
   x = 97,016.47