Finding the Fourth Proportional to 249,371.08, 374,105.40 and 91,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   249,371.08 : 374,105.40 = 91,600.72 : x
2. Step 2: Convert to fraction form
   249,371.08/374,105.40 = 91,600.72/x
3. Step 3: Cross multiply
   249,371.08x = 374,105.40 × 91,600.72
4. Step 4: Simplify right side
   249,371.08x = 34,268,323,995.89
5. Step 5: Solve for x
   x = 34,268,323,995.89/249,371.08
6. Step 6: Final answer
   x = 137,419.00