Finding the Fourth Proportional to 900,086.67, 1,242,116.47 and 507,588.43

Step by Step Solution

1. Step 1: Write the proportion equation
   900,086.67 : 1,242,116.47 = 507,588.43 : x
2. Step 2: Convert to fraction form
   900,086.67/1,242,116.47 = 507,588.43/x
3. Step 3: Cross multiply
   900,086.67x = 1,242,116.47 × 507,588.43
4. Step 4: Simplify right side
   900,086.67x = 630,483,955,152.13
5. Step 5: Solve for x
   x = 630,483,955,152.13/900,086.67
6. Step 6: Final answer
   x = 700,470.27