Finding the Fourth Proportional to 136,433.10, 204,672.05 and 42,916.30

Step by Step Solution

1. Step 1: Write the proportion equation
   136,433.10 : 204,672.05 = 42,916.30 : x
2. Step 2: Convert to fraction form
   136,433.10/204,672.05 = 42,916.30/x
3. Step 3: Cross multiply
   136,433.10x = 204,672.05 × 42,916.30
4. Step 4: Simplify right side
   136,433.10x = 8,783,767,099.42
5. Step 5: Solve for x
   x = 8,783,767,099.42/136,433.10
6. Step 6: Final answer
   x = 64,381.50