Finding the Fourth Proportional to 120,286,123.08, 165,994,917.83 and 65,281,979.58

Step by Step Solution

1. Step 1: Write the proportion equation
   120,286,123.08 : 165,994,917.83 = 65,281,979.58 : x
2. Step 2: Convert to fraction form
   120,286,123.08/165,994,917.83 = 65,281,979.58/x
3. Step 3: Cross multiply
   120,286,123.08x = 165,994,917.83 × 65,281,979.58
4. Step 4: Simplify right side
   120,286,123.08x = 10,836,476,835,835,426
5. Step 5: Solve for x
   x = 10,836,476,835,835,426/120,286,123.08
6. Step 6: Final answer
   x = 90,089,168.71