Finding the Fourth Proportional to 112,401.05, 155,111.63 and 61,412.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,401.05 : 155,111.63 = 61,412.69 : x
2. Step 2: Convert to fraction form
   112,401.05/155,111.63 = 61,412.69/x
3. Step 3: Cross multiply
   112,401.05x = 155,111.63 × 61,412.69
4. Step 4: Simplify right side
   112,401.05x = 9,525,821,365.96
5. Step 5: Solve for x
   x = 9,525,821,365.96/112,401.05
6. Step 6: Final answer
   x = 84,748.51