Finding the Fourth Proportional to 56,981.46, 85,383.90 and 42,926.34

Step by Step Solution

1. Step 1: Write the proportion equation
   56,981.46 : 85,383.90 = 42,926.34 : x
2. Step 2: Convert to fraction form
   56,981.46/85,383.90 = 42,926.34/x
3. Step 3: Cross multiply
   56,981.46x = 85,383.90 × 42,926.34
4. Step 4: Simplify right side
   56,981.46x = 3,665,218,321.93
5. Step 5: Solve for x
   x = 3,665,218,321.93/56,981.46
6. Step 6: Final answer
   x = 64,323.00