Finding the Fourth Proportional to 312,074,773.98, 430,499,911.74 and 192,959,289.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,074,773.98 : 430,499,911.74 = 192,959,289.50 : x
2. Step 2: Convert to fraction form
   312,074,773.98/430,499,911.74 = 192,959,289.50/x
3. Step 3: Cross multiply
   312,074,773.98x = 430,499,911.74 × 192,959,289.50
4. Step 4: Simplify right side
   312,074,773.98x = 83,068,957,097,010,608
5. Step 5: Solve for x
   x = 83,068,957,097,010,608/312,074,773.98
6. Step 6: Final answer
   x = 266,182,863.92