Finding the Fourth Proportional to 112,424.36, 155,141.52 and 64,685.12

Step by Step Solution

1. Step 1: Write the proportion equation
   112,424.36 : 155,141.52 = 64,685.12 : x
2. Step 2: Convert to fraction form
   112,424.36/155,141.52 = 64,685.12/x
3. Step 3: Cross multiply
   112,424.36x = 155,141.52 × 64,685.12
4. Step 4: Simplify right side
   112,424.36x = 10,035,347,838.18
5. Step 5: Solve for x
   x = 10,035,347,838.18/112,424.36
6. Step 6: Final answer
   x = 89,263.11