Finding the Fourth Proportional to 99,836.98, 137,774.50 and 54,515.00

Step by Step Solution

1. Step 1: Write the proportion equation
   99,836.98 : 137,774.50 = 54,515.00 : x
2. Step 2: Convert to fraction form
   99,836.98/137,774.50 = 54,515.00/x
3. Step 3: Cross multiply
   99,836.98x = 137,774.50 × 54,515.00
4. Step 4: Simplify right side
   99,836.98x = 7,510,776,607.31
5. Step 5: Solve for x
   x = 7,510,776,607.31/99,836.98
6. Step 6: Final answer
   x = 75,230.40