Finding the Fourth Proportional to 99,300.69, 137,039.58 and 55,697.48

Step by Step Solution

1. Step 1: Write the proportion equation
   99,300.69 : 137,039.58 = 55,697.48 : x
2. Step 2: Convert to fraction form
   99,300.69/137,039.58 = 55,697.48/x
3. Step 3: Cross multiply
   99,300.69x = 137,039.58 × 55,697.48
4. Step 4: Simplify right side
   99,300.69x = 7,632,758,581.06
5. Step 5: Solve for x
   x = 7,632,758,581.06/99,300.69
6. Step 6: Final answer
   x = 76,865.11