Finding the Fourth Proportional to 144,292,405.98, 199,118,185.55 and 78,211,485.42

Step by Step Solution

1. Step 1: Write the proportion equation
   144,292,405.98 : 199,118,185.55 = 78,211,485.42 : x
2. Step 2: Convert to fraction form
   144,292,405.98/199,118,185.55 = 78,211,485.42/x
3. Step 3: Cross multiply
   144,292,405.98x = 199,118,185.55 × 78,211,485.42
4. Step 4: Simplify right side
   144,292,405.98x = 15,573,329,066,107,416
5. Step 5: Solve for x
   x = 15,573,329,066,107,416/144,292,405.98
6. Step 6: Final answer
   x = 107,928,958.28