Finding the Fourth Proportional to 117,589,978.20, 162,265,746.42 and 64,670,412

Step by Step Solution

1. Step 1: Write the proportion equation
   117,589,978.20 : 162,265,746.42 = 64,670,412 : x
2. Step 2: Convert to fraction form
   117,589,978.20/162,265,746.42 = 64,670,412/x
3. Step 3: Cross multiply
   117,589,978.20x = 162,265,746.42 × 64,670,412
4. Step 4: Simplify right side
   117,589,978.20x = 10,493,792,674,468,924
5. Step 5: Solve for x
   x = 10,493,792,674,468,924/117,589,978.20
6. Step 6: Final answer
   x = 89,240,535.93