Finding the Fourth Proportional to 69,100.82, 103,485.14 and 39,428.70

Step by Step Solution

1. Step 1: Write the proportion equation
   69,100.82 : 103,485.14 = 39,428.70 : x
2. Step 2: Convert to fraction form
   69,100.82/103,485.14 = 39,428.70/x
3. Step 3: Cross multiply
   69,100.82x = 103,485.14 × 39,428.70
4. Step 4: Simplify right side
   69,100.82x = 4,080,284,342.37
5. Step 5: Solve for x
   x = 4,080,284,342.37/69,100.82
6. Step 6: Final answer
   x = 59,048.28