Finding the Fourth Proportional to 117,099,621.52, 161,597,042.42 and 64,888,615.80

Step by Step Solution

1. Step 1: Write the proportion equation
   117,099,621.52 : 161,597,042.42 = 64,888,615.80 : x
2. Step 2: Convert to fraction form
   117,099,621.52/161,597,042.42 = 64,888,615.80/x
3. Step 3: Cross multiply
   117,099,621.52x = 161,597,042.42 × 64,888,615.80
4. Step 4: Simplify right side
   117,099,621.52x = 10,485,808,400,007,680
5. Step 5: Solve for x
   x = 10,485,808,400,007,680/117,099,621.52
6. Step 6: Final answer
   x = 89,546,048.60