Finding the Fourth Proportional to 98,343.72, 135,693.98 and 57,499.98

Step by Step Solution

1. Step 1: Write the proportion equation
   98,343.72 : 135,693.98 = 57,499.98 : x
2. Step 2: Convert to fraction form
   98,343.72/135,693.98 = 57,499.98/x
3. Step 3: Cross multiply
   98,343.72x = 135,693.98 × 57,499.98
4. Step 4: Simplify right side
   98,343.72x = 7,802,401,136.12
5. Step 5: Solve for x
   x = 7,802,401,136.12/98,343.72
6. Step 6: Final answer
   x = 79,338.07