Finding the Fourth Proportional to 142,372,940.93, 196,476,204.91 and 83,638,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   142,372,940.93 : 196,476,204.91 = 83,638,081.61 : x
2. Step 2: Convert to fraction form
   142,372,940.93/196,476,204.91 = 83,638,081.61/x
3. Step 3: Cross multiply
   142,372,940.93x = 196,476,204.91 × 83,638,081.61
4. Step 4: Simplify right side
   142,372,940.93x = 16,432,892,860,389,048
5. Step 5: Solve for x
   x = 16,432,892,860,389,048/142,372,940.93
6. Step 6: Final answer
   x = 115,421,461.08