Finding the Fourth Proportional to 124,332.39, 186,499.89 and 99,530.10

Step by Step Solution

1. Step 1: Write the proportion equation
   124,332.39 : 186,499.89 = 99,530.10 : x
2. Step 2: Convert to fraction form
   124,332.39/186,499.89 = 99,530.10/x
3. Step 3: Cross multiply
   124,332.39x = 186,499.89 × 99,530.10
4. Step 4: Simplify right side
   124,332.39x = 18,562,352,701.69
5. Step 5: Solve for x
   x = 18,562,352,701.69/124,332.39
6. Step 6: Final answer
   x = 149,296.19