Finding the Fourth Proportional to 69,996.15, 104,978.57 and 20,075.99

Step by Step Solution

1. Step 1: Write the proportion equation
   69,996.15 : 104,978.57 = 20,075.99 : x
2. Step 2: Convert to fraction form
   69,996.15/104,978.57 = 20,075.99/x
3. Step 3: Cross multiply
   69,996.15x = 104,978.57 × 20,075.99
4. Step 4: Simplify right side
   69,996.15x = 2,107,548,096.26
5. Step 5: Solve for x
   x = 2,107,548,096.26/69,996.15
6. Step 6: Final answer
   x = 30,109.49