Finding the Fourth Proportional to 103,897.94, 155,808.03 and 81,969.62

Step by Step Solution

1. Step 1: Write the proportion equation
   103,897.94 : 155,808.03 = 81,969.62 : x
2. Step 2: Convert to fraction form
   103,897.94/155,808.03 = 81,969.62/x
3. Step 3: Cross multiply
   103,897.94x = 155,808.03 × 81,969.62
4. Step 4: Simplify right side
   103,897.94x = 12,771,525,012.05
5. Step 5: Solve for x
   x = 12,771,525,012.05/103,897.94
6. Step 6: Final answer
   x = 122,923.76