Finding the Fourth Proportional to 99,504.30, 137,210.70 and 76,846.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99,504.30 : 137,210.70 = 76,846.98 : x
2. Step 2: Convert to fraction form
   99,504.30/137,210.70 = 76,846.98/x
3. Step 3: Cross multiply
   99,504.30x = 137,210.70 × 76,846.98
4. Step 4: Simplify right side
   99,504.30x = 10,544,227,918.69
5. Step 5: Solve for x
   x = 10,544,227,918.69/99,504.30
6. Step 6: Final answer
   x = 105,967.56