Finding the Fourth Proportional to 780,802.42, 1,077,507.89 and 423,106.42

Step by Step Solution

1. Step 1: Write the proportion equation
   780,802.42 : 1,077,507.89 = 423,106.42 : x
2. Step 2: Convert to fraction form
   780,802.42/1,077,507.89 = 423,106.42/x
3. Step 3: Cross multiply
   780,802.42x = 1,077,507.89 × 423,106.42
4. Step 4: Simplify right side
   780,802.42x = 455,900,505,859.65
5. Step 5: Solve for x
   x = 455,900,505,859.65/780,802.42
6. Step 6: Final answer
   x = 583,887.16