Finding the Fourth Proportional to 422,504,116.15, 633,308,875.54 and 142,118,109.61

Step by Step Solution

1. Step 1: Write the proportion equation
   422,504,116.15 : 633,308,875.54 = 142,118,109.61 : x
2. Step 2: Convert to fraction form
   422,504,116.15/633,308,875.54 = 142,118,109.61/x
3. Step 3: Cross multiply
   422,504,116.15x = 633,308,875.54 × 142,118,109.61
4. Step 4: Simplify right side
   422,504,116.15x = 90,004,660,193,401,744
5. Step 5: Solve for x
   x = 90,004,660,193,401,744/422,504,116.15
6. Step 6: Final answer
   x = 213,026,706.14