Finding the Fourth Proportional to 112,683.96, 155,503.60 and 64,936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   112,683.96 : 155,503.60 = 64,936.89 : x
2. Step 2: Convert to fraction form
   112,683.96/155,503.60 = 64,936.89/x
3. Step 3: Cross multiply
   112,683.96x = 155,503.60 × 64,936.89
4. Step 4: Simplify right side
   112,683.96x = 10,097,920,005.46
5. Step 5: Solve for x
   x = 10,097,920,005.46/112,683.96
6. Step 6: Final answer
   x = 89,612.75