Finding the Fourth Proportional to 112,259.96, 168,300.51 and 64,821.20

Step by Step Solution

1. Step 1: Write the proportion equation
   112,259.96 : 168,300.51 = 64,821.20 : x
2. Step 2: Convert to fraction form
   112,259.96/168,300.51 = 64,821.20/x
3. Step 3: Cross multiply
   112,259.96x = 168,300.51 × 64,821.20
4. Step 4: Simplify right side
   112,259.96x = 10,909,441,018.81
5. Step 5: Solve for x
   x = 10,909,441,018.81/112,259.96
6. Step 6: Final answer
   x = 97,180.16