Finding the Fourth Proportional to 111,501, 153,871.92 and 61,200

Step by Step Solution

1. Step 1: Write the proportion equation
   111,501 : 153,871.92 = 61,200 : x
2. Step 2: Convert to fraction form
   111,501/153,871.92 = 61,200/x
3. Step 3: Cross multiply
   111,501x = 153,871.92 × 61,200
4. Step 4: Simplify right side
   111,501x = 9,416,961,504
5. Step 5: Solve for x
   x = 9,416,961,504/111,501
6. Step 6: Final answer
   x = 84,456.30