Finding the Fourth Proportional to 662,611.30, 993,925.59 and 189,312.10

Step by Step Solution

1. Step 1: Write the proportion equation
   662,611.30 : 993,925.59 = 189,312.10 : x
2. Step 2: Convert to fraction form
   662,611.30/993,925.59 = 189,312.10/x
3. Step 3: Cross multiply
   662,611.30x = 993,925.59 × 189,312.10
4. Step 4: Simplify right side
   662,611.30x = 188,162,140,686.64
5. Step 5: Solve for x
   x = 188,162,140,686.64/662,611.30
6. Step 6: Final answer
   x = 283,970.62