Finding the Fourth Proportional to 120,290,386.50, 166,000,823.13 and 65,286,228.42

Step by Step Solution

1. Step 1: Write the proportion equation
   120,290,386.50 : 166,000,823.13 = 65,286,228.42 : x
2. Step 2: Convert to fraction form
   120,290,386.50/166,000,823.13 = 65,286,228.42/x
3. Step 3: Cross multiply
   120,290,386.50x = 166,000,823.13 × 65,286,228.42
4. Step 4: Simplify right side
   120,290,386.50x = 10,837,567,656,773,200
5. Step 5: Solve for x
   x = 10,837,567,656,773,200/120,290,386.50
6. Step 6: Final answer
   x = 90,095,043.94