Finding the Fourth Proportional to 191,856.30, 287,620.35 and 73,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,856.30 : 287,620.35 = 73,612.50 : x
2. Step 2: Convert to fraction form
   191,856.30/287,620.35 = 73,612.50/x
3. Step 3: Cross multiply
   191,856.30x = 287,620.35 × 73,612.50
4. Step 4: Simplify right side
   191,856.30x = 21,172,453,014.38
5. Step 5: Solve for x
   x = 21,172,453,014.38/191,856.30
6. Step 6: Final answer
   x = 110,355.79