Finding the Fourth Proportional to 562,742,061.42, 776,627,126.91 and 354,077,067.18

Step by Step Solution

1. Step 1: Write the proportion equation
   562,742,061.42 : 776,627,126.91 = 354,077,067.18 : x
2. Step 2: Convert to fraction form
   562,742,061.42/776,627,126.91 = 354,077,067.18/x
3. Step 3: Cross multiply
   562,742,061.42x = 776,627,126.91 × 354,077,067.18
4. Step 4: Simplify right side
   562,742,061.42x = 274,985,855,388,722,464
5. Step 5: Solve for x
   x = 274,985,855,388,722,464/562,742,061.42
6. Step 6: Final answer
   x = 488,653,459.98