Finding the Fourth Proportional to 111,820.50, 154,312.29 and 61,518.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,820.50 : 154,312.29 = 61,518.42 : x
2. Step 2: Convert to fraction form
   111,820.50/154,312.29 = 61,518.42/x
3. Step 3: Cross multiply
   111,820.50x = 154,312.29 × 61,518.42
4. Step 4: Simplify right side
   111,820.50x = 9,493,048,267.38
5. Step 5: Solve for x
   x = 9,493,048,267.38/111,820.50
6. Step 6: Final answer
   x = 84,895.42