Finding the Fourth Proportional to 82,368.30, 123,523.65 and 42,912.30

Step by Step Solution

1. Step 1: Write the proportion equation
   82,368.30 : 123,523.65 = 42,912.30 : x
2. Step 2: Convert to fraction form
   82,368.30/123,523.65 = 42,912.30/x
3. Step 3: Cross multiply
   82,368.30x = 123,523.65 × 42,912.30
4. Step 4: Simplify right side
   82,368.30x = 5,300,683,925.90
5. Step 5: Solve for x
   x = 5,300,683,925.90/82,368.30
6. Step 6: Final answer
   x = 64,353.45