Finding the Fourth Proportional to 117,099,618.52, 161,597,038.28 and 64,888,612.80

Step by Step Solution

1. Step 1: Write the proportion equation
   117,099,618.52 : 161,597,038.28 = 64,888,612.80 : x
2. Step 2: Convert to fraction form
   117,099,618.52/161,597,038.28 = 64,888,612.80/x
3. Step 3: Cross multiply
   117,099,618.52x = 161,597,038.28 × 64,888,612.80
4. Step 4: Simplify right side
   117,099,618.52x = 10,485,807,646,577,698
5. Step 5: Solve for x
   x = 10,485,807,646,577,698/117,099,618.52
6. Step 6: Final answer
   x = 89,546,044.46