Finding the Fourth Proportional to 90,139,478.39, 135,209,007.35 and 59,210,367.32

Step by Step Solution

1. Step 1: Write the proportion equation
   90,139,478.39 : 135,209,007.35 = 59,210,367.32 : x
2. Step 2: Convert to fraction form
   90,139,478.39/135,209,007.35 = 59,210,367.32/x
3. Step 3: Cross multiply
   90,139,478.39x = 135,209,007.35 × 59,210,367.32
4. Step 4: Simplify right side
   90,139,478.39x = 8,005,774,990,166,079
5. Step 5: Solve for x
   x = 8,005,774,990,166,079/90,139,478.39
6. Step 6: Final answer
   x = 88,815,412.88