Finding the Fourth Proportional to 102,111.16, 140,926.06 and 57,399.16

Step by Step Solution

1. Step 1: Write the proportion equation
   102,111.16 : 140,926.06 = 57,399.16 : x
2. Step 2: Convert to fraction form
   102,111.16/140,926.06 = 57,399.16/x
3. Step 3: Cross multiply
   102,111.16x = 140,926.06 × 57,399.16
4. Step 4: Simplify right side
   102,111.16x = 8,089,037,466.11
5. Step 5: Solve for x
   x = 8,089,037,466.11/102,111.16
6. Step 6: Final answer
   x = 79,217.96