Finding the Fourth Proportional to 189,810.08, 284,711.52 and 56,690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   189,810.08 : 284,711.52 = 56,690.72 : x
2. Step 2: Convert to fraction form
   189,810.08/284,711.52 = 56,690.72/x
3. Step 3: Cross multiply
   189,810.08x = 284,711.52 × 56,690.72
4. Step 4: Simplify right side
   189,810.08x = 16,140,501,061.09
5. Step 5: Solve for x
   x = 16,140,501,061.09/189,810.08
6. Step 6: Final answer
   x = 85,035.00