Finding the Fourth Proportional to 99,277.02, 137,003.37 and 53,955.78

Step by Step Solution

1. Step 1: Write the proportion equation
   99,277.02 : 137,003.37 = 53,955.78 : x
2. Step 2: Convert to fraction form
   99,277.02/137,003.37 = 53,955.78/x
3. Step 3: Cross multiply
   99,277.02x = 137,003.37 × 53,955.78
4. Step 4: Simplify right side
   99,277.02x = 7,392,123,690.98
5. Step 5: Solve for x
   x = 7,392,123,690.98/99,277.02
6. Step 6: Final answer
   x = 74,459.56