Finding the Fourth Proportional to 108,018,763.49, 162,095,329.88 and 78,821,438.69

Step by Step Solution

1. Step 1: Write the proportion equation
   108,018,763.49 : 162,095,329.88 = 78,821,438.69 : x
2. Step 2: Convert to fraction form
   108,018,763.49/162,095,329.88 = 78,821,438.69/x
3. Step 3: Cross multiply
   108,018,763.49x = 162,095,329.88 × 78,821,438.69
4. Step 4: Simplify right side
   108,018,763.49x = 12,776,587,106,071,744
5. Step 5: Solve for x
   x = 12,776,587,106,071,744/108,018,763.49
6. Step 6: Final answer
   x = 118,281,182.76