Finding the Fourth Proportional to 83,123.10, 124,599.60 and 40,938.30

Step by Step Solution

1. Step 1: Write the proportion equation
   83,123.10 : 124,599.60 = 40,938.30 : x
2. Step 2: Convert to fraction form
   83,123.10/124,599.60 = 40,938.30/x
3. Step 3: Cross multiply
   83,123.10x = 124,599.60 × 40,938.30
4. Step 4: Simplify right side
   83,123.10x = 5,100,895,804.68
5. Step 5: Solve for x
   x = 5,100,895,804.68/83,123.10
6. Step 6: Final answer
   x = 61,365.56