Finding the Fourth Proportional to 99,418.72, 137,199.48 and 54,096.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,418.72 : 137,199.48 = 54,096.94 : x
2. Step 2: Convert to fraction form
   99,418.72/137,199.48 = 54,096.94/x
3. Step 3: Cross multiply
   99,418.72x = 137,199.48 × 54,096.94
4. Step 4: Simplify right side
   99,418.72x = 7,422,071,395.45
5. Step 5: Solve for x
   x = 7,422,071,395.45/99,418.72
6. Step 6: Final answer
   x = 74,654.66