Finding the Fourth Proportional to 156,942.42, 216,583 and 85,322.72

Step by Step Solution

1. Step 1: Write the proportion equation
   156,942.42 : 216,583 = 85,322.72 : x
2. Step 2: Convert to fraction form
   156,942.42/216,583 = 85,322.72/x
3. Step 3: Cross multiply
   156,942.42x = 216,583 × 85,322.72
4. Step 4: Simplify right side
   156,942.42x = 18,479,450,665.76
5. Step 5: Solve for x
   x = 18,479,450,665.76/156,942.42
6. Step 6: Final answer
   x = 117,746.69