Finding the Fourth Proportional to 112,186.30, 154,820.56 and 64,449.22

Step by Step Solution

1. Step 1: Write the proportion equation
   112,186.30 : 154,820.56 = 64,449.22 : x
2. Step 2: Convert to fraction form
   112,186.30/154,820.56 = 64,449.22/x
3. Step 3: Cross multiply
   112,186.30x = 154,820.56 × 64,449.22
4. Step 4: Simplify right side
   112,186.30x = 9,978,064,331.96
5. Step 5: Solve for x
   x = 9,978,064,331.96/112,186.30
6. Step 6: Final answer
   x = 88,941.91