Finding the Fourth Proportional to 52,804.74, 72,870.62 and 28,931.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,804.74 : 72,870.62 = 28,931.40 : x
2. Step 2: Convert to fraction form
   52,804.74/72,870.62 = 28,931.40/x
3. Step 3: Cross multiply
   52,804.74x = 72,870.62 × 28,931.40
4. Step 4: Simplify right side
   52,804.74x = 2,108,249,055.47
5. Step 5: Solve for x
   x = 2,108,249,055.47/52,804.74
6. Step 6: Final answer
   x = 39,925.38