Finding the Fourth Proportional to 69,093.38, 103,406.78 and 42,820.22

Step by Step Solution

1. Step 1: Write the proportion equation
   69,093.38 : 103,406.78 = 42,820.22 : x
2. Step 2: Convert to fraction form
   69,093.38/103,406.78 = 42,820.22/x
3. Step 3: Cross multiply
   69,093.38x = 103,406.78 × 42,820.22
4. Step 4: Simplify right side
   69,093.38x = 4,427,901,069.09
5. Step 5: Solve for x
   x = 4,427,901,069.09/69,093.38
6. Step 6: Final answer
   x = 64,085.75