Finding the Fourth Proportional to 191,421.18, 287,173.31 and 58,298.00

Step by Step Solution

1. Step 1: Write the proportion equation
   191,421.18 : 287,173.31 = 58,298.00 : x
2. Step 2: Convert to fraction form
   191,421.18/287,173.31 = 58,298.00/x
3. Step 3: Cross multiply
   191,421.18x = 287,173.31 × 58,298.00
4. Step 4: Simplify right side
   191,421.18x = 16,741,627,899.02
5. Step 5: Solve for x
   x = 16,741,627,899.02/191,421.18
6. Step 6: Final answer
   x = 87,459.64