Finding the Fourth Proportional to 133,016.26, 199,447.59 and 90,947.29

Step by Step Solution

1. Step 1: Write the proportion equation
   133,016.26 : 199,447.59 = 90,947.29 : x
2. Step 2: Convert to fraction form
   133,016.26/199,447.59 = 90,947.29/x
3. Step 3: Cross multiply
   133,016.26x = 199,447.59 × 90,947.29
4. Step 4: Simplify right side
   133,016.26x = 18,139,217,807.53
5. Step 5: Solve for x
   x = 18,139,217,807.53/133,016.26
6. Step 6: Final answer
   x = 136,368.42