Finding the Fourth Proportional to 189,433.05, 284,196.35 and 56,312.74

Step by Step Solution

1. Step 1: Write the proportion equation
   189,433.05 : 284,196.35 = 56,312.74 : x
2. Step 2: Convert to fraction form
   189,433.05/284,196.35 = 56,312.74/x
3. Step 3: Cross multiply
   189,433.05x = 284,196.35 × 56,312.74
4. Step 4: Simplify right side
   189,433.05x = 16,003,875,166.50
5. Step 5: Solve for x
   x = 16,003,875,166.50/189,433.05
6. Step 6: Final answer
   x = 84,483.01