Finding the Fourth Proportional to 52,985.34, 79,485.39 and 17,915.58

Step by Step Solution

1. Step 1: Write the proportion equation
   52,985.34 : 79,485.39 = 17,915.58 : x
2. Step 2: Convert to fraction form
   52,985.34/79,485.39 = 17,915.58/x
3. Step 3: Cross multiply
   52,985.34x = 79,485.39 × 17,915.58
4. Step 4: Simplify right side
   52,985.34x = 1,424,026,863.38
5. Step 5: Solve for x
   x = 1,424,026,863.38/52,985.34
6. Step 6: Final answer
   x = 26,875.87