Finding the Fourth Proportional to 131,931,498.27, 197,897,116.01 and 90,391,445.31

Step by Step Solution

1. Step 1: Write the proportion equation
   131,931,498.27 : 197,897,116.01 = 90,391,445.31 : x
2. Step 2: Convert to fraction form
   131,931,498.27/197,897,116.01 = 90,391,445.31/x
3. Step 3: Cross multiply
   131,931,498.27x = 197,897,116.01 × 90,391,445.31
4. Step 4: Simplify right side
   131,931,498.27x = 17,888,206,338,372,684
5. Step 5: Solve for x
   x = 17,888,206,338,372,684/131,931,498.27
6. Step 6: Final answer
   x = 135,587,077.94