Finding the Fourth Proportional to 81,111,730.38, 121,222,279.83 and 59,298,031.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,111,730.38 : 121,222,279.83 = 59,298,031.05 : x
2. Step 2: Convert to fraction form
   81,111,730.38/121,222,279.83 = 59,298,031.05/x
3. Step 3: Cross multiply
   81,111,730.38x = 121,222,279.83 × 59,298,031.05
4. Step 4: Simplify right side
   81,111,730.38x = 7,188,242,513,311,128
5. Step 5: Solve for x
   x = 7,188,242,513,311,128/81,111,730.38
6. Step 6: Final answer
   x = 88,621,491.36