Finding the Fourth Proportional to 42,391,684.10, 63,587,526.15 and 10,478,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,391,684.10 : 63,587,526.15 = 10,478,980.10 : x
2. Step 2: Convert to fraction form
   42,391,684.10/63,587,526.15 = 10,478,980.10/x
3. Step 3: Cross multiply
   42,391,684.10x = 63,587,526.15 × 10,478,980.10
4. Step 4: Simplify right side
   42,391,684.10x = 666,332,421,134,079.62
5. Step 5: Solve for x
   x = 666,332,421,134,079.62/42,391,684.10
6. Step 6: Final answer
   x = 15,718,470.15