Finding the Fourth Proportional to 83,607.39, 115,422.98 and 64,445.22

Step by Step Solution

1. Step 1: Write the proportion equation
   83,607.39 : 115,422.98 = 64,445.22 : x
2. Step 2: Convert to fraction form
   83,607.39/115,422.98 = 64,445.22/x
3. Step 3: Cross multiply
   83,607.39x = 115,422.98 × 64,445.22
4. Step 4: Simplify right side
   83,607.39x = 7,438,459,016.93
5. Step 5: Solve for x
   x = 7,438,459,016.93/83,607.39
6. Step 6: Final answer
   x = 88,968.92