Finding the Fourth Proportional to 85,822,920.40, 128,791,621.18 and 31,235,490.72

Step by Step Solution

1. Step 1: Write the proportion equation
   85,822,920.40 : 128,791,621.18 = 31,235,490.72 : x
2. Step 2: Convert to fraction form
   85,822,920.40/128,791,621.18 = 31,235,490.72/x
3. Step 3: Cross multiply
   85,822,920.40x = 128,791,621.18 × 31,235,490.72
4. Step 4: Simplify right side
   85,822,920.40x = 4,022,869,488,181,645.50
5. Step 5: Solve for x
   x = 4,022,869,488,181,645.50/85,822,920.40
6. Step 6: Final answer
   x = 46,874,068.95