Finding the Fourth Proportional to 312,074,773.36, 430,499,910.88 and 192,959,288.87

Step by Step Solution

1. Step 1: Write the proportion equation
   312,074,773.36 : 430,499,910.88 = 192,959,288.87 : x
2. Step 2: Convert to fraction form
   312,074,773.36/430,499,910.88 = 192,959,288.87/x
3. Step 3: Cross multiply
   312,074,773.36x = 430,499,910.88 × 192,959,288.87
4. Step 4: Simplify right side
   312,074,773.36x = 83,068,956,662,003,184
5. Step 5: Solve for x
   x = 83,068,956,662,003,184/312,074,773.36
6. Step 6: Final answer
   x = 266,182,863.07