Finding the Fourth Proportional to 99,477.44, 137,274.72 and 54,762.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,477.44 : 137,274.72 = 54,762.56 : x
2. Step 2: Convert to fraction form
   99,477.44/137,274.72 = 54,762.56/x
3. Step 3: Cross multiply
   99,477.44x = 137,274.72 × 54,762.56
4. Step 4: Simplify right side
   99,477.44x = 7,517,515,090.48
5. Step 5: Solve for x
   x = 7,517,515,090.48/99,477.44
6. Step 6: Final answer
   x = 75,570.05