Finding the Fourth Proportional to 57,091,128.17, 78,785,834.69 and 30,985,646.38

Step by Step Solution

1. Step 1: Write the proportion equation
   57,091,128.17 : 78,785,834.69 = 30,985,646.38 : x
2. Step 2: Convert to fraction form
   57,091,128.17/78,785,834.69 = 30,985,646.38/x
3. Step 3: Cross multiply
   57,091,128.17x = 78,785,834.69 × 30,985,646.38
4. Step 4: Simplify right side
   57,091,128.17x = 2,441,230,013,337,976.50
5. Step 5: Solve for x
   x = 2,441,230,013,337,976.50/57,091,128.17
6. Step 6: Final answer
   x = 42,760,234.23