Finding the Fourth Proportional to 120,182,907.60, 165,852,412.55 and 65,178,764.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,182,907.60 : 165,852,412.55 = 65,178,764.10 : x
2. Step 2: Convert to fraction form
   120,182,907.60/165,852,412.55 = 65,178,764.10/x
3. Step 3: Cross multiply
   120,182,907.60x = 165,852,412.55 × 65,178,764.10
4. Step 4: Simplify right side
   120,182,907.60x = 10,810,055,272,930,858
5. Step 5: Solve for x
   x = 10,810,055,272,930,858/120,182,907.60
6. Step 6: Final answer
   x = 89,946,694.49