Finding the Fourth Proportional to 78,742.67, 108,662.51 and 42,933.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,742.67 : 108,662.51 = 42,933.38 : x
2. Step 2: Convert to fraction form
   78,742.67/108,662.51 = 42,933.38/x
3. Step 3: Cross multiply
   78,742.67x = 108,662.51 × 42,933.38
4. Step 4: Simplify right side
   78,742.67x = 4,665,248,397.60
5. Step 5: Solve for x
   x = 4,665,248,397.60/78,742.67
6. Step 6: Final answer
   x = 59,246.77