Finding the Fourth Proportional to 112,126.72, 154,738.56 and 64,388.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,126.72 : 154,738.56 = 64,388.56 : x
2. Step 2: Convert to fraction form
   112,126.72/154,738.56 = 64,388.56/x
3. Step 3: Cross multiply
   112,126.72x = 154,738.56 × 64,388.56
4. Step 4: Simplify right side
   112,126.72x = 9,963,393,054.87
5. Step 5: Solve for x
   x = 9,963,393,054.87/112,126.72
6. Step 6: Final answer
   x = 88,858.33