Finding the Fourth Proportional to 111,905.02, 154,419.51 and 64,147.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,905.02 : 154,419.51 = 64,147.42 : x
2. Step 2: Convert to fraction form
   111,905.02/154,419.51 = 64,147.42/x
3. Step 3: Cross multiply
   111,905.02x = 154,419.51 × 64,147.42
4. Step 4: Simplify right side
   111,905.02x = 9,905,613,164.16
5. Step 5: Solve for x
   x = 9,905,613,164.16/111,905.02
6. Step 6: Final answer
   x = 88,518.04