Finding the Fourth Proportional to 42,680,165.76, 64,020,294.72 and 19,977,006.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,680,165.76 : 64,020,294.72 = 19,977,006.24 : x
2. Step 2: Convert to fraction form
   42,680,165.76/64,020,294.72 = 19,977,006.24/x
3. Step 3: Cross multiply
   42,680,165.76x = 64,020,294.72 × 19,977,006.24
4. Step 4: Simplify right side
   42,680,165.76x = 1,278,933,827,108,079
5. Step 5: Solve for x
   x = 1,278,933,827,108,079/42,680,165.76
6. Step 6: Final answer
   x = 29,965,530.93