Finding the Fourth Proportional to 78,364.53, 108,141.75 and 42,554.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,364.53 : 108,141.75 = 42,554.43 : x
2. Step 2: Convert to fraction form
   78,364.53/108,141.75 = 42,554.43/x
3. Step 3: Cross multiply
   78,364.53x = 108,141.75 × 42,554.43
4. Step 4: Simplify right side
   78,364.53x = 4,601,910,530.45
5. Step 5: Solve for x
   x = 4,601,910,530.45/78,364.53
6. Step 6: Final answer
   x = 58,724.41