Finding the Fourth Proportional to 69,071.41, 103,469.94 and 53,221.45

Step by Step Solution

1. Step 1: Write the proportion equation
   69,071.41 : 103,469.94 = 53,221.45 : x
2. Step 2: Convert to fraction form
   69,071.41/103,469.94 = 53,221.45/x
3. Step 3: Cross multiply
   69,071.41x = 103,469.94 × 53,221.45
4. Step 4: Simplify right side
   69,071.41x = 5,506,820,238.21
5. Step 5: Solve for x
   x = 5,506,820,238.21/69,071.41
6. Step 6: Final answer
   x = 79,726.48