Finding the Fourth Proportional to 58,436.76, 80,652.86 and 56,492.76

Step by Step Solution

1. Step 1: Write the proportion equation
   58,436.76 : 80,652.86 = 56,492.76 : x
2. Step 2: Convert to fraction form
   58,436.76/80,652.86 = 56,492.76/x
3. Step 3: Cross multiply
   58,436.76x = 80,652.86 × 56,492.76
4. Step 4: Simplify right side
   58,436.76x = 4,556,302,663.29
5. Step 5: Solve for x
   x = 4,556,302,663.29/58,436.76
6. Step 6: Final answer
   x = 77,969.80