Finding the Fourth Proportional to 112,338.36, 155,014.16 and 64,607.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,338.36 : 155,014.16 = 64,607.09 : x
2. Step 2: Convert to fraction form
   112,338.36/155,014.16 = 64,607.09/x
3. Step 3: Cross multiply
   112,338.36x = 155,014.16 × 64,607.09
4. Step 4: Simplify right side
   112,338.36x = 10,015,012,688.29
5. Step 5: Solve for x
   x = 10,015,012,688.29/112,338.36
6. Step 6: Final answer
   x = 89,150.43