Finding the Fourth Proportional to 78,362.73, 108,140.78 and 42,553.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,362.73 : 108,140.78 = 42,553.34 : x
2. Step 2: Convert to fraction form
   78,362.73/108,140.78 = 42,553.34/x
3. Step 3: Cross multiply
   78,362.73x = 108,140.78 × 42,553.34
4. Step 4: Simplify right side
   78,362.73x = 4,601,751,379.21
5. Step 5: Solve for x
   x = 4,601,751,379.21/78,362.73
6. Step 6: Final answer
   x = 58,723.72