Finding the Fourth Proportional to 112,486.34, 155,270.24 and 64,758.71

Step by Step Solution

1. Step 1: Write the proportion equation
   112,486.34 : 155,270.24 = 64,758.71 : x
2. Step 2: Convert to fraction form
   112,486.34/155,270.24 = 64,758.71/x
3. Step 3: Cross multiply
   112,486.34x = 155,270.24 × 64,758.71
4. Step 4: Simplify right side
   112,486.34x = 10,055,100,168.75
5. Step 5: Solve for x
   x = 10,055,100,168.75/112,486.34
6. Step 6: Final answer
   x = 89,389.52