Finding the Fourth Proportional to 141,696.69, 212,311.76 and 99,006.45

Step by Step Solution

1. Step 1: Write the proportion equation
   141,696.69 : 212,311.76 = 99,006.45 : x
2. Step 2: Convert to fraction form
   141,696.69/212,311.76 = 99,006.45/x
3. Step 3: Cross multiply
   141,696.69x = 212,311.76 × 99,006.45
4. Step 4: Simplify right side
   141,696.69x = 21,020,233,155.82
5. Step 5: Solve for x
   x = 21,020,233,155.82/141,696.69
6. Step 6: Final answer
   x = 148,346.68