Finding the Fourth Proportional to 42,882.67, 64,302.07 and 17,915.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,882.67 : 64,302.07 = 17,915.91 : x
2. Step 2: Convert to fraction form
   42,882.67/64,302.07 = 17,915.91/x
3. Step 3: Cross multiply
   42,882.67x = 64,302.07 × 17,915.91
4. Step 4: Simplify right side
   42,882.67x = 1,152,030,098.93
5. Step 5: Solve for x
   x = 1,152,030,098.93/42,882.67
6. Step 6: Final answer
   x = 26,864.70