Finding the Fourth Proportional to 85,667.63, 118,258.40 and 64,452.11

Step by Step Solution

1. Step 1: Write the proportion equation
   85,667.63 : 118,258.40 = 64,452.11 : x
2. Step 2: Convert to fraction form
   85,667.63/118,258.40 = 64,452.11/x
3. Step 3: Cross multiply
   85,667.63x = 118,258.40 × 64,452.11
4. Step 4: Simplify right side
   85,667.63x = 7,622,003,405.22
5. Step 5: Solve for x
   x = 7,622,003,405.22/85,667.63
6. Step 6: Final answer
   x = 88,971.80