Finding the Fourth Proportional to 99,338.00, 137,083.55 and 56,321.46

Step by Step Solution

1. Step 1: Write the proportion equation
   99,338.00 : 137,083.55 = 56,321.46 : x
2. Step 2: Convert to fraction form
   99,338.00/137,083.55 = 56,321.46/x
3. Step 3: Cross multiply
   99,338.00x = 137,083.55 × 56,321.46
4. Step 4: Simplify right side
   99,338.00x = 7,720,745,396.38
5. Step 5: Solve for x
   x = 7,720,745,396.38/99,338.00
6. Step 6: Final answer
   x = 77,721.98