Finding the Fourth Proportional to 112,460.54, 155,190.96 and 64,715.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,460.54 : 155,190.96 = 64,715.60 : x
2. Step 2: Convert to fraction form
   112,460.54/155,190.96 = 64,715.60/x
3. Step 3: Cross multiply
   112,460.54x = 155,190.96 × 64,715.60
4. Step 4: Simplify right side
   112,460.54x = 10,043,276,090.98
5. Step 5: Solve for x
   x = 10,043,276,090.98/112,460.54
6. Step 6: Final answer
   x = 89,304.89