Finding the Fourth Proportional to 111,064.59, 153,293.73 and 76,657.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,064.59 : 153,293.73 = 76,657.62 : x
2. Step 2: Convert to fraction form
   111,064.59/153,293.73 = 76,657.62/x
3. Step 3: Cross multiply
   111,064.59x = 153,293.73 × 76,657.62
4. Step 4: Simplify right side
   111,064.59x = 11,751,132,502.72
5. Step 5: Solve for x
   x = 11,751,132,502.72/111,064.59
6. Step 6: Final answer
   x = 105,804.49