Finding the Fourth Proportional to 56,499.19, 77,969.18 and 31,008.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,499.19 : 77,969.18 = 31,008.02 : x
2. Step 2: Convert to fraction form
   56,499.19/77,969.18 = 31,008.02/x
3. Step 3: Cross multiply
   56,499.19x = 77,969.18 × 31,008.02
4. Step 4: Simplify right side
   56,499.19x = 2,417,669,580.50
5. Step 5: Solve for x
   x = 2,417,669,580.50/56,499.19
6. Step 6: Final answer
   x = 42,791.23