Finding the Fourth Proportional to 105,478,542.72, 158,263,281.72 and 56,946,760.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,478,542.72 : 158,263,281.72 = 56,946,760.20 : x
2. Step 2: Convert to fraction form
   105,478,542.72/158,263,281.72 = 56,946,760.20/x
3. Step 3: Cross multiply
   105,478,542.72x = 158,263,281.72 × 56,946,760.20
4. Step 4: Simplify right side
   105,478,542.72x = 9,012,581,152,573,884
5. Step 5: Solve for x
   x = 9,012,581,152,573,884/105,478,542.72
6. Step 6: Final answer
   x = 85,444,687.80