Finding the Fourth Proportional to 46,427.67, 69,632.60 and 13,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   46,427.67 : 69,632.60 = 13,139.69 : x
2. Step 2: Convert to fraction form
   46,427.67/69,632.60 = 13,139.69/x
3. Step 3: Cross multiply
   46,427.67x = 69,632.60 × 13,139.69
4. Step 4: Simplify right side
   46,427.67x = 914,950,364.03
5. Step 5: Solve for x
   x = 914,950,364.03/46,427.67
6. Step 6: Final answer
   x = 19,707.01