Finding the Fourth Proportional to 99,105.69, 148,681.23 and 42,955.23

Step by Step Solution

1. Step 1: Write the proportion equation
   99,105.69 : 148,681.23 = 42,955.23 : x
2. Step 2: Convert to fraction form
   99,105.69/148,681.23 = 42,955.23/x
3. Step 3: Cross multiply
   99,105.69x = 148,681.23 × 42,955.23
4. Step 4: Simplify right side
   99,105.69x = 6,386,636,431.33
5. Step 5: Solve for x
   x = 6,386,636,431.33/99,105.69
6. Step 6: Final answer
   x = 64,442.68