Finding the Fourth Proportional to 52,683.77, 78,942.42 and 42,774.63

Step by Step Solution

1. Step 1: Write the proportion equation
   52,683.77 : 78,942.42 = 42,774.63 : x
2. Step 2: Convert to fraction form
   52,683.77/78,942.42 = 42,774.63/x
3. Step 3: Cross multiply
   52,683.77x = 78,942.42 × 42,774.63
4. Step 4: Simplify right side
   52,683.77x = 3,376,732,806.80
5. Step 5: Solve for x
   x = 3,376,732,806.80/52,683.77
6. Step 6: Final answer
   x = 64,094.37