Finding the Fourth Proportional to 39,156,947.20, 54,045,230.16 and 21,759,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,156,947.20 : 54,045,230.16 = 21,759,274.72 : x
2. Step 2: Convert to fraction form
   39,156,947.20/54,045,230.16 = 21,759,274.72/x
3. Step 3: Cross multiply
   39,156,947.20x = 54,045,230.16 × 21,759,274.72
4. Step 4: Simplify right side
   39,156,947.20x = 1,175,985,010,357,069.50
5. Step 5: Solve for x
   x = 1,175,985,010,357,069.50/39,156,947.20
6. Step 6: Final answer
   x = 30,032,601.99