Finding the Fourth Proportional to 91,213,101.60, 136,628,881.20 and 42,732,333.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,213,101.60 : 136,628,881.20 = 42,732,333.60 : x
2. Step 2: Convert to fraction form
   91,213,101.60/136,628,881.20 = 42,732,333.60/x
3. Step 3: Cross multiply
   91,213,101.60x = 136,628,881.20 × 42,732,333.60
4. Step 4: Simplify right side
   91,213,101.60x = 5,838,470,930,833,168
5. Step 5: Solve for x
   x = 5,838,470,930,833,168/91,213,101.60
6. Step 6: Final answer
   x = 64,009,126.19