Finding the Fourth Proportional to 112,792.74, 155,648.04 and 64,392.75

Step by Step Solution

1. Step 1: Write the proportion equation
   112,792.74 : 155,648.04 = 64,392.75 : x
2. Step 2: Convert to fraction form
   112,792.74/155,648.04 = 64,392.75/x
3. Step 3: Cross multiply
   112,792.74x = 155,648.04 × 64,392.75
4. Step 4: Simplify right side
   112,792.74x = 10,022,605,327.71
5. Step 5: Solve for x
   x = 10,022,605,327.71/112,792.74
6. Step 6: Final answer
   x = 88,858.60