Finding the Fourth Proportional to 99,733, 137,631.56 and 55,021

Step by Step Solution

1. Step 1: Write the proportion equation
   99,733 : 137,631.56 = 55,021 : x
2. Step 2: Convert to fraction form
   99,733/137,631.56 = 55,021/x
3. Step 3: Cross multiply
   99,733x = 137,631.56 × 55,021
4. Step 4: Simplify right side
   99,733x = 7,572,626,062.76
5. Step 5: Solve for x
   x = 7,572,626,062.76/99,733
6. Step 6: Final answer
   x = 75,928.99