Finding the Fourth Proportional to 91,792.80, 137,741.04 and 39,196.80

Step by Step Solution

1. Step 1: Write the proportion equation
   91,792.80 : 137,741.04 = 39,196.80 : x
2. Step 2: Convert to fraction form
   91,792.80/137,741.04 = 39,196.80/x
3. Step 3: Cross multiply
   91,792.80x = 137,741.04 × 39,196.80
4. Step 4: Simplify right side
   91,792.80x = 5,399,007,996.67
5. Step 5: Solve for x
   x = 5,399,007,996.67/91,792.80
6. Step 6: Final answer
   x = 58,817.34