Finding the Fourth Proportional to 69,978.84, 96,570.21 and 38,147.07

Step by Step Solution

1. Step 1: Write the proportion equation
   69,978.84 : 96,570.21 = 38,147.07 : x
2. Step 2: Convert to fraction form
   69,978.84/96,570.21 = 38,147.07/x
3. Step 3: Cross multiply
   69,978.84x = 96,570.21 × 38,147.07
4. Step 4: Simplify right side
   69,978.84x = 3,683,870,560.78
5. Step 5: Solve for x
   x = 3,683,870,560.78/69,978.84
6. Step 6: Final answer
   x = 52,642.64