Finding the Fourth Proportional to 191,799.48, 287,688.72 and 58,679.74

Step by Step Solution

1. Step 1: Write the proportion equation
   191,799.48 : 287,688.72 = 58,679.74 : x
2. Step 2: Convert to fraction form
   191,799.48/287,688.72 = 58,679.74/x
3. Step 3: Cross multiply
   191,799.48x = 287,688.72 × 58,679.74
4. Step 4: Simplify right side
   191,799.48x = 16,881,499,290.53
5. Step 5: Solve for x
   x = 16,881,499,290.53/191,799.48
6. Step 6: Final answer
   x = 88,016.40