Finding the Fourth Proportional to 112,401.18, 155,111.79 and 61,412.79

Step by Step Solution

1. Step 1: Write the proportion equation
   112,401.18 : 155,111.79 = 61,412.79 : x
2. Step 2: Convert to fraction form
   112,401.18/155,111.79 = 61,412.79/x
3. Step 3: Cross multiply
   112,401.18x = 155,111.79 × 61,412.79
4. Step 4: Simplify right side
   112,401.18x = 9,525,847,785.79
5. Step 5: Solve for x
   x = 9,525,847,785.79/112,401.18
6. Step 6: Final answer
   x = 84,748.65