Finding the Fourth Proportional to 525,870.42, 788,885.55 and 193,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   525,870.42 : 788,885.55 = 193,420.50 : x
2. Step 2: Convert to fraction form
   525,870.42/788,885.55 = 193,420.50/x
3. Step 3: Cross multiply
   525,870.42x = 788,885.55 × 193,420.50
4. Step 4: Simplify right side
   525,870.42x = 152,586,637,523.78
5. Step 5: Solve for x
   x = 152,586,637,523.78/525,870.42
6. Step 6: Final answer
   x = 290,160.15