Finding the Fourth Proportional to 562,139,085.31, 775,776,180.12 and 311,243,481.93

Step by Step Solution

1. Step 1: Write the proportion equation
   562,139,085.31 : 775,776,180.12 = 311,243,481.93 : x
2. Step 2: Convert to fraction form
   562,139,085.31/775,776,180.12 = 311,243,481.93/x
3. Step 3: Cross multiply
   562,139,085.31x = 775,776,180.12 × 311,243,481.93
4. Step 4: Simplify right side
   562,139,085.31x = 241,455,279,498,903,648
5. Step 5: Solve for x
   x = 241,455,279,498,903,648/562,139,085.31
6. Step 6: Final answer
   x = 429,529,427.52