Finding the Fourth Proportional to 99,818.62, 137,585.58 and 70,756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,818.62 : 137,585.58 = 70,756.72 : x
2. Step 2: Convert to fraction form
   99,818.62/137,585.58 = 70,756.72/x
3. Step 3: Cross multiply
   99,818.62x = 137,585.58 × 70,756.72
4. Step 4: Simplify right side
   99,818.62x = 9,735,104,360.10
5. Step 5: Solve for x
   x = 9,735,104,360.10/99,818.62
6. Step 6: Final answer
   x = 97,527.94