Finding the Fourth Proportional to 56,368, 77,784.72 and 31,215.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,368 : 77,784.72 = 31,215.52 : x
2. Step 2: Convert to fraction form
   56,368/77,784.72 = 31,215.52/x
3. Step 3: Cross multiply
   56,368x = 77,784.72 × 31,215.52
4. Step 4: Simplify right side
   56,368x = 2,428,090,482.85
5. Step 5: Solve for x
   x = 2,428,090,482.85/56,368
6. Step 6: Final answer
   x = 43,075.69