Finding the Fourth Proportional to 42,752,649.36, 64,128,980.69 and 10,404,551.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,752,649.36 : 64,128,980.69 = 10,404,551.76 : x
2. Step 2: Convert to fraction form
   42,752,649.36/64,128,980.69 = 10,404,551.76/x
3. Step 3: Cross multiply
   42,752,649.36x = 64,128,980.69 × 10,404,551.76
4. Step 4: Simplify right side
   42,752,649.36x = 667,233,298,931,156.88
5. Step 5: Solve for x
   x = 667,233,298,931,156.88/42,752,649.36
6. Step 6: Final answer
   x = 15,606,829.26