Finding the Fourth Proportional to 99,929.82, 137,903.56 and 54,607.68

Step by Step Solution

1. Step 1: Write the proportion equation
   99,929.82 : 137,903.56 = 54,607.68 : x
2. Step 2: Convert to fraction form
   99,929.82/137,903.56 = 54,607.68/x
3. Step 3: Cross multiply
   99,929.82x = 137,903.56 × 54,607.68
4. Step 4: Simplify right side
   99,929.82x = 7,530,593,475.34
5. Step 5: Solve for x
   x = 7,530,593,475.34/99,929.82
6. Step 6: Final answer
   x = 75,358.82