Finding the Fourth Proportional to 99,300.17, 137,040.53 and 55,696.79

Step by Step Solution

1. Step 1: Write the proportion equation
   99,300.17 : 137,040.53 = 55,696.79 : x
2. Step 2: Convert to fraction form
   99,300.17/137,040.53 = 55,696.79/x
3. Step 3: Cross multiply
   99,300.17x = 137,040.53 × 55,696.79
4. Step 4: Simplify right side
   99,300.17x = 7,632,717,685.02
5. Step 5: Solve for x
   x = 7,632,717,685.02/99,300.17
6. Step 6: Final answer
   x = 76,865.10