Finding the Fourth Proportional to 61,139.57, 91,691.51 and 23,691.29

Step by Step Solution

1. Step 1: Write the proportion equation
   61,139.57 : 91,691.51 = 23,691.29 : x
2. Step 2: Convert to fraction form
   61,139.57/91,691.51 = 23,691.29/x
3. Step 3: Cross multiply
   61,139.57x = 91,691.51 × 23,691.29
4. Step 4: Simplify right side
   61,139.57x = 2,172,289,577.03
5. Step 5: Solve for x
   x = 2,172,289,577.03/61,139.57
6. Step 6: Final answer
   x = 35,530.01