Finding the Fourth Proportional to 328,196.12, 492,377.24 and 91,538.81

Step by Step Solution

1. Step 1: Write the proportion equation
   328,196.12 : 492,377.24 = 91,538.81 : x
2. Step 2: Convert to fraction form
   328,196.12/492,377.24 = 91,538.81/x
3. Step 3: Cross multiply
   328,196.12x = 492,377.24 × 91,538.81
4. Step 4: Simplify right side
   328,196.12x = 45,071,623,701.10
5. Step 5: Solve for x
   x = 45,071,623,701.10/328,196.12
6. Step 6: Final answer
   x = 137,331.37