Finding the Fourth Proportional to 212,785.89, 293,646.54 and 117,296.00

Step by Step Solution

1. Step 1: Write the proportion equation
   212,785.89 : 293,646.54 = 117,296.00 : x
2. Step 2: Convert to fraction form
   212,785.89/293,646.54 = 117,296.00/x
3. Step 3: Cross multiply
   212,785.89x = 293,646.54 × 117,296.00
4. Step 4: Simplify right side
   212,785.89x = 34,443,563,087.61
5. Step 5: Solve for x
   x = 34,443,563,087.61/212,785.89
6. Step 6: Final answer
   x = 161,869.58