Finding the Fourth Proportional to 99,597.58, 137,443.41 and 54,277.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,597.58 : 137,443.41 = 54,277.54 : x
2. Step 2: Convert to fraction form
   99,597.58/137,443.41 = 54,277.54/x
3. Step 3: Cross multiply
   99,597.58x = 137,443.41 × 54,277.54
4. Step 4: Simplify right side
   99,597.58x = 7,460,090,184.01
5. Step 5: Solve for x
   x = 7,460,090,184.01/99,597.58
6. Step 6: Final answer
   x = 74,902.32