Finding the Fourth Proportional to 212,118, 318,160.35 and 123,314.82

Step by Step Solution

1. Step 1: Write the proportion equation
   212,118 : 318,160.35 = 123,314.82 : x
2. Step 2: Convert to fraction form
   212,118/318,160.35 = 123,314.82/x
3. Step 3: Cross multiply
   212,118x = 318,160.35 × 123,314.82
4. Step 4: Simplify right side
   212,118x = 39,233,886,291.39
5. Step 5: Solve for x
   x = 39,233,886,291.39/212,118
6. Step 6: Final answer
   x = 184,962.55