Finding the Fourth Proportional to 38,608,974.88, 53,267,422.42 and 21,861,426

Step by Step Solution

1. Step 1: Write the proportion equation
   38,608,974.88 : 53,267,422.42 = 21,861,426 : x
2. Step 2: Convert to fraction form
   38,608,974.88/53,267,422.42 = 21,861,426/x
3. Step 3: Cross multiply
   38,608,974.88x = 53,267,422.42 × 21,861,426
4. Step 4: Simplify right side
   38,608,974.88x = 1,164,501,813,445,571
5. Step 5: Solve for x
   x = 1,164,501,813,445,571/38,608,974.88
6. Step 6: Final answer
   x = 30,161,427.93