Finding the Fourth Proportional to 156,915.15, 235,113.52 and 133,587.15

Step by Step Solution

1. Step 1: Write the proportion equation
   156,915.15 : 235,113.52 = 133,587.15 : x
2. Step 2: Convert to fraction form
   156,915.15/235,113.52 = 133,587.15/x
3. Step 3: Cross multiply
   156,915.15x = 235,113.52 × 133,587.15
4. Step 4: Simplify right side
   156,915.15x = 31,408,145,063.27
5. Step 5: Solve for x
   x = 31,408,145,063.27/156,915.15
6. Step 6: Final answer
   x = 200,160.06