Finding the Fourth Proportional to 111,080.40, 153,294.72 and 60,779.36

Step by Step Solution

1. Step 1: Write the proportion equation
   111,080.40 : 153,294.72 = 60,779.36 : x
2. Step 2: Convert to fraction form
   111,080.40/153,294.72 = 60,779.36/x
3. Step 3: Cross multiply
   111,080.40x = 153,294.72 × 60,779.36
4. Step 4: Simplify right side
   111,080.40x = 9,317,154,972.98
5. Step 5: Solve for x
   x = 9,317,154,972.98/111,080.40
6. Step 6: Final answer
   x = 83,877.58