Finding the Fourth Proportional to 78,783.38, 108,722.53 and 42,974.67

Step by Step Solution

1. Step 1: Write the proportion equation
   78,783.38 : 108,722.53 = 42,974.67 : x
2. Step 2: Convert to fraction form
   78,783.38/108,722.53 = 42,974.67/x
3. Step 3: Cross multiply
   78,783.38x = 108,722.53 × 42,974.67
4. Step 4: Simplify right side
   78,783.38x = 4,672,314,848.32
5. Step 5: Solve for x
   x = 4,672,314,848.32/78,783.38
6. Step 6: Final answer
   x = 59,305.84