Finding the Fourth Proportional to 39,093,141.48, 53,948,541.90 and 21,689,445.16

Step by Step Solution

1. Step 1: Write the proportion equation
   39,093,141.48 : 53,948,541.90 = 21,689,445.16 : x
2. Step 2: Convert to fraction form
   39,093,141.48/53,948,541.90 = 21,689,445.16/x
3. Step 3: Cross multiply
   39,093,141.48x = 53,948,541.90 × 21,689,445.16
4. Step 4: Simplify right side
   39,093,141.48x = 1,170,113,941,002,012.25
5. Step 5: Solve for x
   x = 1,170,113,941,002,012.25/39,093,141.48
6. Step 6: Final answer
   x = 29,931,438.01