Finding the Fourth Proportional to 201,829, 278,532.66 and 112,405

Step by Step Solution

1. Step 1: Write the proportion equation
   201,829 : 278,532.66 = 112,405 : x
2. Step 2: Convert to fraction form
   201,829/278,532.66 = 112,405/x
3. Step 3: Cross multiply
   201,829x = 278,532.66 × 112,405
4. Step 4: Simplify right side
   201,829x = 31,308,463,647.30
5. Step 5: Solve for x
   x = 31,308,463,647.30/201,829
6. Step 6: Final answer
   x = 155,123.71