Finding the Fourth Proportional to 111,211,124.82, 166,844,472.72 and 78,485,591.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,211,124.82 : 166,844,472.72 = 78,485,591.35 : x
2. Step 2: Convert to fraction form
   111,211,124.82/166,844,472.72 = 78,485,591.35/x
3. Step 3: Cross multiply
   111,211,124.82x = 166,844,472.72 × 78,485,591.35
4. Step 4: Simplify right side
   111,211,124.82x = 13,094,887,104,908,142
5. Step 5: Solve for x
   x = 13,094,887,104,908,142/111,211,124.82
6. Step 6: Final answer
   x = 117,747,996.22