Finding the Fourth Proportional to 67,856.43, 93,602.70 and 42,318.47

Step by Step Solution

1. Step 1: Write the proportion equation
   67,856.43 : 93,602.70 = 42,318.47 : x
2. Step 2: Convert to fraction form
   67,856.43/93,602.70 = 42,318.47/x
3. Step 3: Cross multiply
   67,856.43x = 93,602.70 × 42,318.47
4. Step 4: Simplify right side
   67,856.43x = 3,961,123,051.87
5. Step 5: Solve for x
   x = 3,961,123,051.87/67,856.43
6. Step 6: Final answer
   x = 58,375.06