Finding the Fourth Proportional to 56,636,986,017.89, 78,159,048,355.16 and 31,262,462,138.18

Step by Step Solution

1. Step 1: Write the proportion equation
   56,636,986,017.89 : 78,159,048,355.16 = 31,262,462,138.18 : x
2. Step 2: Convert to fraction form
   56,636,986,017.89/78,159,048,355.16 = 31,262,462,138.18/x
3. Step 3: Cross multiply
   56,636,986,017.89x = 78,159,048,355.16 × 31,262,462,138.18
4. Step 4: Simplify right side
   56,636,986,017.89x = 2,443,444,289,958,822,019,072
5. Step 5: Solve for x
   x = 2,443,444,289,958,822,019,072/56,636,986,017.89
6. Step 6: Final answer
   x = 43,142,201,973.59