Finding the Fourth Proportional to 90,772.29, 136,173.06 and 38,196.81

Step by Step Solution

1. Step 1: Write the proportion equation
   90,772.29 : 136,173.06 = 38,196.81 : x
2. Step 2: Convert to fraction form
   90,772.29/136,173.06 = 38,196.81/x
3. Step 3: Cross multiply
   90,772.29x = 136,173.06 × 38,196.81
4. Step 4: Simplify right side
   90,772.29x = 5,201,376,499.94
5. Step 5: Solve for x
   x = 5,201,376,499.94/90,772.29
6. Step 6: Final answer
   x = 57,301.37