Finding the Fourth Proportional to 212,679.31, 293,510.55 and 117,185.98

Step by Step Solution

1. Step 1: Write the proportion equation
   212,679.31 : 293,510.55 = 117,185.98 : x
2. Step 2: Convert to fraction form
   212,679.31/293,510.55 = 117,185.98/x
3. Step 3: Cross multiply
   212,679.31x = 293,510.55 × 117,185.98
4. Step 4: Simplify right side
   212,679.31x = 34,395,321,442.09
5. Step 5: Solve for x
   x = 34,395,321,442.09/212,679.31
6. Step 6: Final answer
   x = 161,723.87