Finding the Fourth Proportional to 42,508,389.75, 58,679,678.43 and 28,577,824.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,508,389.75 : 58,679,678.43 = 28,577,824.07 : x
2. Step 2: Convert to fraction form
   42,508,389.75/58,679,678.43 = 28,577,824.07/x
3. Step 3: Cross multiply
   42,508,389.75x = 58,679,678.43 × 28,577,824.07
4. Step 4: Simplify right side
   42,508,389.75x = 1,676,937,526,513,824.50
5. Step 5: Solve for x
   x = 1,676,937,526,513,824.50/42,508,389.75
6. Step 6: Final answer
   x = 39,449,565.99