Finding the Fourth Proportional to 279,111.12, 385,164.33 and 158,263.17

Step by Step Solution

1. Step 1: Write the proportion equation
   279,111.12 : 385,164.33 = 158,263.17 : x
2. Step 2: Convert to fraction form
   279,111.12/385,164.33 = 158,263.17/x
3. Step 3: Cross multiply
   279,111.12x = 385,164.33 × 158,263.17
4. Step 4: Simplify right side
   279,111.12x = 60,957,326,689.10
5. Step 5: Solve for x
   x = 60,957,326,689.10/279,111.12
6. Step 6: Final answer
   x = 218,398.06