Finding the Fourth Proportional to 133,016.34, 199,447.71 and 90,947.37

Step by Step Solution

1. Step 1: Write the proportion equation
   133,016.34 : 199,447.71 = 90,947.37 : x
2. Step 2: Convert to fraction form
   133,016.34/199,447.71 = 90,947.37/x
3. Step 3: Cross multiply
   133,016.34x = 199,447.71 × 90,947.37
4. Step 4: Simplify right side
   133,016.34x = 18,139,244,677.02
5. Step 5: Solve for x
   x = 18,139,244,677.02/133,016.34
6. Step 6: Final answer
   x = 136,368.54