Finding the Fourth Proportional to 108,018,762.49, 162,095,328.38 and 78,821,437.69

Step by Step Solution

1. Step 1: Write the proportion equation
   108,018,762.49 : 162,095,328.38 = 78,821,437.69 : x
2. Step 2: Convert to fraction form
   108,018,762.49/162,095,328.38 = 78,821,437.69/x
3. Step 3: Cross multiply
   108,018,762.49x = 162,095,328.38 × 78,821,437.69
4. Step 4: Simplify right side
   108,018,762.49x = 12,776,586,825,744,258
5. Step 5: Solve for x
   x = 12,776,586,825,744,258/108,018,762.49
6. Step 6: Final answer
   x = 118,281,181.26