Finding the Fourth Proportional to 112,368.03, 155,066.72 and 64,620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   112,368.03 : 155,066.72 = 64,620.15 : x
2. Step 2: Convert to fraction form
   112,368.03/155,066.72 = 64,620.15/x
3. Step 3: Cross multiply
   112,368.03x = 155,066.72 × 64,620.15
4. Step 4: Simplify right side
   112,368.03x = 10,020,434,383.31
5. Step 5: Solve for x
   x = 10,020,434,383.31/112,368.03
6. Step 6: Final answer
   x = 89,175.14