Finding the Fourth Proportional to 145,156,841.30, 217,231,377.15 and 133,063,606.10

Step by Step Solution

1. Step 1: Write the proportion equation
   145,156,841.30 : 217,231,377.15 = 133,063,606.10 : x
2. Step 2: Convert to fraction form
   145,156,841.30/217,231,377.15 = 133,063,606.10/x
3. Step 3: Cross multiply
   145,156,841.30x = 217,231,377.15 × 133,063,606.10
4. Step 4: Simplify right side
   145,156,841.30x = 28,905,590,401,648,140
5. Step 5: Solve for x
   x = 28,905,590,401,648,140/145,156,841.30
6. Step 6: Final answer
   x = 199,133,503.75