Finding the Fourth Proportional to 318,870.86, 478,373.75 and 105,626.69

Step by Step Solution

1. Step 1: Write the proportion equation
   318,870.86 : 478,373.75 = 105,626.69 : x
2. Step 2: Convert to fraction form
   318,870.86/478,373.75 = 105,626.69/x
3. Step 3: Cross multiply
   318,870.86x = 478,373.75 × 105,626.69
4. Step 4: Simplify right side
   318,870.86x = 50,529,032,875.39
5. Step 5: Solve for x
   x = 50,529,032,875.39/318,870.86
6. Step 6: Final answer
   x = 158,462.37