Finding the Fourth Proportional to 99,976.30, 137,967.58 and 54,654.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,976.30 : 137,967.58 = 54,654.82 : x
2. Step 2: Convert to fraction form
   99,976.30/137,967.58 = 54,654.82/x
3. Step 3: Cross multiply
   99,976.30x = 137,967.58 × 54,654.82
4. Step 4: Simplify right side
   99,976.30x = 7,540,593,250.74
5. Step 5: Solve for x
   x = 7,540,593,250.74/99,976.30
6. Step 6: Final answer
   x = 75,423.81