Finding the Fourth Proportional to 91,493,020.60, 137,345,819.10 and 55,142,456.20

Step by Step Solution

1. Step 1: Write the proportion equation
   91,493,020.60 : 137,345,819.10 = 55,142,456.20 : x
2. Step 2: Convert to fraction form
   91,493,020.60/137,345,819.10 = 55,142,456.20/x
3. Step 3: Cross multiply
   91,493,020.60x = 137,345,819.10 × 55,142,456.20
4. Step 4: Simplify right side
   91,493,020.60x = 7,573,585,813,974,874
5. Step 5: Solve for x
   x = 7,573,585,813,974,874/91,493,020.60
6. Step 6: Final answer
   x = 82,777,743.75