Finding the Fourth Proportional to 141,920,404.10, 212,880,606.15 and 141,920,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   141,920,404.10 : 212,880,606.15 = 141,920,404.10 : x
2. Step 2: Convert to fraction form
   141,920,404.10/212,880,606.15 = 141,920,404.10/x
3. Step 3: Cross multiply
   141,920,404.10x = 212,880,606.15 × 141,920,404.10
4. Step 4: Simplify right side
   141,920,404.10x = 30,212,101,649,860,944
5. Step 5: Solve for x
   x = 30,212,101,649,860,944/141,920,404.10
6. Step 6: Final answer
   x = 212,880,606.15