Finding the Fourth Proportional to 112,912.50, 155,819.25 and 62,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,912.50 : 155,819.25 = 62,611.50 : x
2. Step 2: Convert to fraction form
   112,912.50/155,819.25 = 62,611.50/x
3. Step 3: Cross multiply
   112,912.50x = 155,819.25 × 62,611.50
4. Step 4: Simplify right side
   112,912.50x = 9,756,076,971.38
5. Step 5: Solve for x
   x = 9,756,076,971.38/112,912.50
6. Step 6: Final answer
   x = 86,403.87