Finding the Fourth Proportional to 99,278.02, 137,004.72 and 53,956

Step by Step Solution

1. Step 1: Write the proportion equation
   99,278.02 : 137,004.72 = 53,956 : x
2. Step 2: Convert to fraction form
   99,278.02/137,004.72 = 53,956/x
3. Step 3: Cross multiply
   99,278.02x = 137,004.72 × 53,956
4. Step 4: Simplify right side
   99,278.02x = 7,392,226,672.32
5. Step 5: Solve for x
   x = 7,392,226,672.32/99,278.02
6. Step 6: Final answer
   x = 74,459.86