Finding the Fourth Proportional to 112,376.07, 155,083.69 and 64,629.45

Step by Step Solution

1. Step 1: Write the proportion equation
   112,376.07 : 155,083.69 = 64,629.45 : x
2. Step 2: Convert to fraction form
   112,376.07/155,083.69 = 64,629.45/x
3. Step 3: Cross multiply
   112,376.07x = 155,083.69 × 64,629.45
4. Step 4: Simplify right side
   112,376.07x = 10,022,973,588.67
5. Step 5: Solve for x
   x = 10,022,973,588.67/112,376.07
6. Step 6: Final answer
   x = 89,191.35