Finding the Fourth Proportional to 99,708, 137,606.76 and 54,996

Step by Step Solution

1. Step 1: Write the proportion equation
   99,708 : 137,606.76 = 54,996 : x
2. Step 2: Convert to fraction form
   99,708/137,606.76 = 54,996/x
3. Step 3: Cross multiply
   99,708x = 137,606.76 × 54,996
4. Step 4: Simplify right side
   99,708x = 7,567,821,372.96
5. Step 5: Solve for x
   x = 7,567,821,372.96/99,708
6. Step 6: Final answer
   x = 75,899.84