Finding the Fourth Proportional to 112,401.21, 155,109.06 and 61,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,401.21 : 155,109.06 = 61,415.69 : x
2. Step 2: Convert to fraction form
   112,401.21/155,109.06 = 61,415.69/x
3. Step 3: Cross multiply
   112,401.21x = 155,109.06 × 61,415.69
4. Step 4: Simplify right side
   112,401.21x = 9,526,129,945.15
5. Step 5: Solve for x
   x = 9,526,129,945.15/112,401.21
6. Step 6: Final answer
   x = 84,751.13