Finding the Fourth Proportional to 69,017.67, 103,657.71 and 42,904.89

Step by Step Solution

1. Step 1: Write the proportion equation
   69,017.67 : 103,657.71 = 42,904.89 : x
2. Step 2: Convert to fraction form
   69,017.67/103,657.71 = 42,904.89/x
3. Step 3: Cross multiply
   69,017.67x = 103,657.71 × 42,904.89
4. Step 4: Simplify right side
   69,017.67x = 4,447,422,645.20
5. Step 5: Solve for x
   x = 4,447,422,645.20/69,017.67
6. Step 6: Final answer
   x = 64,438.90