Finding the Fourth Proportional to 111,300.06, 153,603.81 and 61,008.78

Step by Step Solution

1. Step 1: Write the proportion equation
   111,300.06 : 153,603.81 = 61,008.78 : x
2. Step 2: Convert to fraction form
   111,300.06/153,603.81 = 61,008.78/x
3. Step 3: Cross multiply
   111,300.06x = 153,603.81 × 61,008.78
4. Step 4: Simplify right side
   111,300.06x = 9,371,181,051.45
5. Step 5: Solve for x
   x = 9,371,181,051.45/111,300.06
6. Step 6: Final answer
   x = 84,197.45