Finding the Fourth Proportional to 69,426.72, 103,637.52 and 61,019.28

Step by Step Solution

1. Step 1: Write the proportion equation
   69,426.72 : 103,637.52 = 61,019.28 : x
2. Step 2: Convert to fraction form
   69,426.72/103,637.52 = 61,019.28/x
3. Step 3: Cross multiply
   69,426.72x = 103,637.52 × 61,019.28
4. Step 4: Simplify right side
   69,426.72x = 6,323,886,851.39
5. Step 5: Solve for x
   x = 6,323,886,851.39/69,426.72
6. Step 6: Final answer
   x = 91,087.22