Finding the Fourth Proportional to 91,691.60, 137,510.73 and 35,519.18

Step by Step Solution

1. Step 1: Write the proportion equation
   91,691.60 : 137,510.73 = 35,519.18 : x
2. Step 2: Convert to fraction form
   91,691.60/137,510.73 = 35,519.18/x
3. Step 3: Cross multiply
   91,691.60x = 137,510.73 × 35,519.18
4. Step 4: Simplify right side
   91,691.60x = 4,884,267,683.25
5. Step 5: Solve for x
   x = 4,884,267,683.25/91,691.60
6. Step 6: Final answer
   x = 53,268.43