Finding the Fourth Proportional to 42,740,698.32, 64,110,148.38 and 10,392,766.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,740,698.32 : 64,110,148.38 = 10,392,766.74 : x
2. Step 2: Convert to fraction form
   42,740,698.32/64,110,148.38 = 10,392,766.74/x
3. Step 3: Cross multiply
   42,740,698.32x = 64,110,148.38 × 10,392,766.74
4. Step 4: Simplify right side
   42,740,698.32x = 666,281,817,780,128.88
5. Step 5: Solve for x
   x = 666,281,817,780,128.88/42,740,698.32
6. Step 6: Final answer
   x = 15,588,931.49