Finding the Fourth Proportional to 1,077,933,131.61, 1,617,621,947.33 and 378,427,345.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,933,131.61 : 1,617,621,947.33 = 378,427,345.30 : x
2. Step 2: Convert to fraction form
   1,077,933,131.61/1,617,621,947.33 = 378,427,345.30/x
3. Step 3: Cross multiply
   1,077,933,131.61x = 1,617,621,947.33 × 378,427,345.30
4. Step 4: Simplify right side
   1,077,933,131.61x = 612,152,379,227,238,144
5. Step 5: Solve for x
   x = 612,152,379,227,238,144/1,077,933,131.61
6. Step 6: Final answer
   x = 567,894,576.46