Finding the Fourth Proportional to 111,129.69, 153,357.78 and 60,141.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,129.69 : 153,357.78 = 60,141.30 : x
2. Step 2: Convert to fraction form
   111,129.69/153,357.78 = 60,141.30/x
3. Step 3: Cross multiply
   111,129.69x = 153,357.78 × 60,141.30
4. Step 4: Simplify right side
   111,129.69x = 9,223,136,254.31
5. Step 5: Solve for x
   x = 9,223,136,254.31/111,129.69
6. Step 6: Final answer
   x = 82,994.35